28 September, 2007

Basecamp Review

Note: This article was originally published on the Omnistar Etools website.


This entry was originally posted on the omnistaretools.com blog. It is reposted here for reference only.


Good project management software is hard to find, but thankfully, after you read this, you won’t have to go looking very far. That’s because our group here at Omnistar Etools has already found the ultimate project management software: 37signal’s Basecamp.
Basecamp has everything you could ever want: an ease of functionality that allows even the most computer illiterate to understand and participate, an intuitive interface that allows and even encouragesclear communication, and a beautiful design that will get you bonus points every time you use the software with clients.
Using Basecamp makes it very clear how closely good communication is linked to completion of projects on time and as ordered. With Basecamp, everything is so easy to use that poor communication on a project is nearly impossible. And the tools used to track hours spent on a project makes it clear exactly how efficiently work is coming along on each type of task.
Perhaps more impressive is the ability to use Basecamp not just with your employees, but also with clients to keep them abreast of projects as they’re being worked on. Keeping clients ‘in the loop’ has never been so easy: you can upload files for viewing, and they can easily leave comments that can be replied to at will. And since the site design is fully customizable, you can maintain the look and feel of the rest of your site.
But by far the best thing about Basecamp is the main Project Overview page. There, you can see exactly how everything is progressing, with upcoming deadlines, details of who is responsible for what, and reports of how many hours each person has spent on doing their assignments. Plus, it even creates an RSS feed, so you can be informed at your convenience or even on the go via PDA or cell phone!
Basecamp truly does offer everything you’ve ever wanted in project manangement software, and then some. If you haven’t used it before, you will be amazed at how simple a thing as ease of use will streamline your project completion. We use it here at Omnistar Etools every day, and it truly is something that we cannot imagine going without. It truly is the last project management tool you will ever need.
Posted by Eric Herboso
Did you enjoy this article? If so, then subscribe to my RSS Feed.
There are more resources available at our On-line Webmaster Resource Center.

27 September, 2007

Why Typography is Important

Note: This article was originally published on the Omnistar Etools website.
When designing your site, a common mistake is to spend all your time working on nothing but content and layout. But, as in most things, it is always the little things that make you stand out from the crowd.
Typography is, when you think about it, one of the most important design decisions you can make on your website. Sure, your color scheme, layout, and logo are just as (if not more) important, but remember that the whole point of getting visitors to your site is for them to read your content, and that means that more than anything else, your site visitors are going to be looking at your typography near-continuously. So you can see why choosing a good typographic style is extremely important for every web designer.
There are a few main issues that you have to keep in mind when dealing with typography:
Minimalism
Never use more than three different fonts on a single page, unless you have an exceedingly good reason to. One for headers, one for subheadings, and one for content is more than enough.
Serif versus Sans-Serif
Serif fonts do not scale to smaller sizes well, so copy should always be in a sans-serif font. Headers are a different matter, so long as they are larger type.
Using CSS
Site-wide typography decisions should always be maintained at the stylesheet level. This is important for three main reasons.
  • Good SEO technique requires content keywords to be coded semantically–headers should use tags, and emphasized content should use tags. By keeping typography out of the html code, you make it easier to code semantically, and to update for keyword-related issues later on.
  • Your pages render better. On dial-up connections, if you don’t use CSS, then every time a new page is loaded, the browser has to read the style commands over again, and so momentarily, your site will look very different from how you wish it to appear. With CSS, this problem occurs only on the first page load; every subsequent load uses the same style sheet, and so the problem never recurs.
  • Bandwidth conservation & load times: by using CSS for typography, you save on bandwidth costs and your pages will load faster as a result.
Font-family attribute
It is sometimes tempting to resort to all kinds of fancy font faces, but remember that the end user will only see the fonts that they have installed on their computer. As a consequence, you must always remember to cite a number of fonts, from your first pick to your last, ending with a description of the font-family you prefer. For example, you might use the following in your stylesheet:
h1   { font-family: Garamond, Georgia, serif; }
body { font-family: Verdana, Arial, sans-serif; }
Column width
Dictating a maximum column width is useful for many reasons, but the most important one is that when you have a large block of text, it is much easier for the eye to read the text in narrower columns than in columns that take up the entire monitor width. Magazines and newspapers limit column width for the same reason you should: the human eye finds it much less stressful to read in smaller blocks of text.
Browser variability
Remember that how your site looks on your computer is not necessarily how it may look on someone else’s machine. Every browser may show typography differently; that’s why you have to pay careful attention to your css specifications.
Of course, this is certainly not all you’ll ever need to know about typography. But it is a start that will not only make your site more user-friendly, but also will help to keep more visitors coming back. After all, that’s what being a webmaster is all about.

24 September, 2007

Ahmadinejad at Columbia University

Today, I saw Iranian President Mahmoud Ahmadinejad speak at Columbia University. I'd like to share a few highlights of the encounter, and I don't just mean the novelty of dealing with secret service agents staring down the visitors, nor the protesters outside, nor the fact that if you got up to use the restroom, you weren't allowed back into the auditorium. Instead, I want to share what I heard, as well as what I felt.
The event started with the President of Columbia University "introducing" Ahmadinejad--but what started as a simple introduction turned into a speech all by itself. Columbia President Lee Bolinger remarks included this amazing initial salvo:
"Mr. President, you exhibit all the signs of a petty and cruel dictator...."
Bolinger then listed item after item pointedly asking President Ahmadinejad about policies such as his statement two years ago that the Holocaust did not happen, and whether he was using nuclear threats to hide the fact that he was an incompetent president of his people. He said that either Pres. Ahmadinejad was "brazenly provocative or astonishingly uneducated". He claimed that Iran is the leading country in executing minors, and asked very pointedly why women, members of the Baha'i faith, homosexuals, and academics have all become targets of prosecution in Iran.
Bolinger's 'introduction' lasted thirty minutes. During this time, President Ahmadinejad patiently waited for his chance to speak.
Finally, Pres. Ahmadinejad took the podium. He started, as most Muslims of his type do, by reciting verses from the Koran, which really turned me off, but you really have to put up with such cultural eccentricities, I suppose, if you ever want to mount a successful dialogue.
Then he finally started, thanking God for his chance to speak to an academic audience. His initial words I am copying here from the Associated Press reports that came out, instead of by memory:
"At the outset, I want to complain a bit about the person who read this political statement against me. In Iran, tradition requires that when we invite a person to be a speaker, we actually respect our students and the professors by allowing them to make their own judgment and we don’t think it’s necessary before the speech is even given to come in with a series of claims and to attempt to provide a vaccination of sorts to our faculty and students. I think the text read by the dear gentleman here, more than addressing me, was an insult to information and the knowledge of the audience here, present here. In a university environment we must allow people to speak their mind, to allow everyone to talk so that the truth is eventually revealed by all."
The audience bursted into applause at this point. I don't usually applaud unless I really appreciate a point, but I have to admit that I ended up clapping, too.
Pres. Ahmadinejad then went on to mention that he would indeed answer Pres. Bolinger's questions, but that first he had much to say. He added that many of Bolinger's facts were incorrect, and that they were in some parts exaggerations and in other outright lies.
Then Ahmadinejad went into that mode of speech that I so came to despise back at Spring Hill College: logic combined with religious crap. Think apologist-style, for you catholics out there. Something about science is illumination, god loves illumination, therefore god loves science; also science isn't just experiments and hypotheses, but also divine truth as told by the prophets; science is a light source by which we may see the reality of knowledge, but we must not ignore knowledge which remains occluded by shadow; but science's light is best used by scientists, and "some world powers" that choose to use science against humanity are wrong to do so; etc., ad nauseum. I expect this was his written speech, prepared well in advance. It sucked big time.
But afterward, and before he moved on to taking questions from the audience, he decided to respond to Bolinger's earlier attacks in his 'introduction'. This is where it got good.
First, he responded to the holocaust denial accusation.
He said that two years ago, he raised two questions, both of which he feels are valid questions, and should be asked. Yet instead of getting answers, he instead has been ridiculed by the press and insulted by Bolinger concerning his asking of these questions.
I will quote him directly, again copied straight from AP, so that you can see what he said for yourself:
"You know that my main job is as a university instructor. Right now, as president of Iran, I still continue teaching graduate and Ph.D.-level courses on a weekly basis. My students are working with me in scientific fields. I believe that I am an academic myself, so I speak to you from an academic point of view. And I raise two questions. But instead of a response, I got a wave of insults and allegations against me. And regretfully, they came mostly from groups who claimed most to believe in the freedom of speech and of information.
"You know quite well that Palestine is an old wound –- as old as 60 years. For 60 years, these people are displaced. For 60 years, they are being killed. For 60 years, on a daily basis there’s conflict and terror, for 60 years, innocent women and children are destroyed and killed by helicopters and airplanes that rake the houses over their heads. Children in schools are being tortured, for 60 years, the slogan of expansionism, from the Nile to the Euphrates, has been chanted.
"Given that the Holocaust is a present reality of our time, a history that occurred, why is there not sufficient research that can approach the topic from different perspectives?"
His 'two questions' are these:
  • Why is there no further research on the Holocaust? Why is there only one perspective shown in every historical narrative of the Holocaust?
  • Even if everything traditionally said historically about the holocaust is true, why do the Palestinians have to pay for atrocities the Axis powers committed?
He did not mention the Iraq invasion in this part of his speech, but the implication was clear: Just as Al Qaeda attacked the United States, and we took it out on Iraqis, the Germans attacked the Jews, and in retaliation, the West decided to kick out the Palestinians so that the Jews could have their own state.
"We need to still question whether the Palestinian people should be paying for it or not. After all, it happened in Europe. The Palestinian people had no role in it. Why is it that the Palestinian people are paying the price for an event they had nothing to do with?
"They had no role to play in World War II. They were living with the Jewish and Christian communities in peace at the time. They didn’t have any problems. Today, too, Jews, Christians and Muslims live in brotherhood in many parts of the world. Why is it that Palestinians should pay a price -– innocent Palestinians -– for five million people to remain displaced and refugees abroad, for 60 years? Is this not a crime? Is asking about these crimes a crime in itself? Why should an academic like myself face insults for asking questions like this?"
He went further than this, noting that those few Western academics who try to research the holocaust from an alternate perspective are not only ridiculed, but jailed for doing so. Personally, I can think of no such example offhand. but I hesitate to flatly deny this accusation of his, especially since I have seen reports of holocaust deniers being thrown off faculties and the like in the past. Of course, if I was a University President, I'd probably throw out Holocaust deniers, too, for fear that they were incompetent. But maybe I'd be wrong to do so automatically.
Pres. Ahmadinejad then concluded quickly, under duress, noting that he had much more to say, but that Bolinger had spoken just as long as he had, and stolen the time available for Ahmadinejad to talk. He mentioned the nuclear issue, stating that Iran has been a member of the International Atomic Energy Agency (IAEA) for years, and that the organization's bylaws allow all members to use nuclear energy freely--and he pointed out that IAEA inspectors have repeatedly shown that Iran is following correct protocols, and it is only "two or three world powers" who keep objecting to Iran's development of uranium. (Amusingly, the interpreter found it particularly difficult to say "IAEA" correctly, and this problem was compounded by Ahmadinejad's repeated use of the term.)
He mentioned that yes, other countries have offered to give Iran uranium rather than let Iran develop it themselves, but Ahmadinejad demurred, stating:
"Why do we need the fuel from you? [meaning 'why should we have to get fuel from you?'] You’ve not even given us spare aircraft parts that we do need for civilian aircraft, under the name of embargo and sanctions under the pretext that we are against human rights and freedom. We want the right to self-determination, to be independent."
He said that he does not trust the Western nations to give him fuel; Iran needs to develop this capability by herself. He then cited contractors from America, France, Germany and Canada that promised to help Iran benefit from nuclear energy, and pointed out that "unilaterally each and every one of them canceled their contracts with us as a result of which the Iranian people had to pay the heavy cost in billions of dollars."
At this point, the moderator (not Bolinger) stopped Ahmadinejad, stating time restraints, and the question/answer section was started.
Question one:
Do you, or your country, call for the destruction of Israel?
(This question is in relation to previous statements of his for the past few months that give that effect.)
Ahmadinejad danced around the question, stating that he had no problem with Jews, that he liked Jews just as he liked every other nation. He pointed out that many Jews live peacefully in Iran, and that they even get a special status in the Parliament, where they get more representatives than the Iranian constitution technically requires them to have. But it was apparent that Ahmadinejad drew a sharp distinction between Jews and Israel. "Palestinians should be free to choose their own destiny. Let them decide what should happen there."
The moderator was not satisfied with this answer, and responded back quickly: "I think most of the members of our audience would prefer a real answer to this question. It can be answered with a single word: yes or no?"
Ahmadinejad's consternation was clear. He responded by saying that "you have asked the question, but you do not like the answer." He claimed that what was important was that Palestinians should choose for themselves what happens in their lands. For sixty years, the Palestinians have lived in exile. "Let them--all of them, jewish palestinians, muslim palestinians, all of them--pass a free referendum. "Let the people of Palestine freely chose what they want for their future."
Question two:
Why does Iran sponsor terrorism?
(This question is in regard to Gen. Betrayus' testimony earlier last week that claimed that terrorist attacks in Iraq had grown to a level that could only indicate that Iran was sending weapons and training.)
Ahmadinejad's reaction to this question was strong. "Iranians hate terrorism." He denied sponsoring terrorism, and then accused the United States of being the true sponsors of terrorism. "The groups your country sponsors in Iraq right now--these are the same groups that killed members of my parliament. They are terrorists many times over, and the United States actively supports them today." He went on, reminding the audience that Saddam Hussein was also sponsored by the United States, and pointed out: "We need to address the root causes of terrorism and eradicate those root causes.” He then said that where he is from, in the middle east, "It is clear which powers incite terrorists, support them, fund them."
"Our nation, the Iranian nation, through history, has always extended a hand of friendship to other nations. We’re a cultured nation. We don’t need to resort to terrorism. We’ve been victims of terrorism ourselves. It’s regrettable that people who argued they are fighting terrorism — instead of supporting the Iranian nation — are supporting the terrorists and then turn the finger at us. This is most regrettable."
The next few questions dealt with women in Iran, and more Holocaust stuff. Unfortunately, the questions and responses on the Holocaust stuff was very similar to what I quote earlier, so I won't go back into it. But on women, Ahmadinejad was very defensive, stating that "when a woman is born to a family, they are ten times as blessed", and gave many specifics about women in high positions of authority in Iran. He even made a jab at the United States' low voter participation rate, mentioning that in Iran, "we are a free people, and we all vote, 80-90%, and half of these are women. Women in Iran are free, with true freedoms."
Question five:
Why are so many people put to death in Iran? Women, academics, homosexuals?
Ahmadinejad answered by pointing out that Iran puts people to death the same way the United States does. When a criminal kills people, Iran makes an example of them. He went on and on in this vein.
But then the moderator interrupted, saying: "The question is not about criminals, but about homosexuals and women. Why do you put homosexuals and women to death?"
Ahmadinejad paused, took a breath, and then stated:
In Iran we don't have homosexuals like in your country. We don't have that like in your country. [audience laughs] In Iran we do not have this phenomenon. I don't know who's told you that we have this.
That was probably my favorite quote of the afternoon.
He then went on about women again. I won't repeat his restatements.
The next question was about what he would have said if he had been allowed to visit ground zero at the world trade center, to which he claimed confusion as to why people would think it disrespectful for him to pay his respects for the lives that were lost on Sept. 11.
And he was asked again about nuclear weapons. I won't go over most of his rehashing, but he added at the end:
"If you have created the fifth generation of atomic bombs and tested them already, what position are you in to question the peaceful purposes of others who want nuclear power? We don’t believe in nuclear weapons, period. It goes against the whole grain of humanity. Leaders--politicians who are interested in nuclear weapons are backward--they are retarded."
That was a great jab at Bush, by the way, what with our recent nuclear bomb developments.
And finally, after thanking his audience, he extended an invitation to the Univeristy faculty and students to come to Iran whenever they wanted, and they could speak at any University they chose. Plus, he added: "When you come, we will treat you with respect."
It was a very interesting experience.

21 September, 2007

How to Prevent Bandwidth Theft

Note: This article was originally published on the Omnistar Etools website.
One problem every webmaster should be aware of is bandwidth theft. Sometimes, malignant webmasters who like your images may decide to hotlink them, effectively serving your images (using up your bandwidth) on their site. While it may not be a problem ordinarily, all it takes is one time: if a blog with a large readership hotlinks your image, you may use up your monthly bandwidth allowance in the space of a day.
As with most problems, the best way to solve this issue is to prevent it from happening in the first place.
There are a few of ways you can stop hotlinkers from showing your images:
  • Denial of Access
  • Alternate Image Served
  • HTML Document Served
Each of these methods requires modifying the .htaccess file associated with your site. Your .htaccess file protects all files in the same directory as the .htaccess file as well as all files in subdirectories of that folder. When modifying the .htaccess file, remember that it must remain in ASCII format, so use Notepad or any other plain text editor.
The denial of access route is the most common method used. It basically consists of refusing any domain other than the ones you specify to show the image. The modification to your .htaccess file should include the following lines of code:
RewriteEngine On
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://yoursite.com [NC]
RewriteCond %{HTTP_REFERER} !^http://www.yoursite.com [NC]
RewriteRule .*\.(gif|jpg|swf|png)$ - [NC,F]
Make sure that each line is unbroken, and remember to replace yoursite.com with your actual domain name. Notice that this code refuses hotlinking of gifs, jpgs, pngs, and flash files.
Alternately, you may wish to try and gain hits from unwanted bandwidth theft. By serving an alternate image, you will still be serving up images, which causes you to lose bandwidth, but instead of the image the hotlinker requested, you may show an image that states: "To see this image, please visit YourSite.com" or something similar. To do this, simply replace that last line of code (the Rewrite Rule line) with the following:
RewriteRule .*\.(gif|jpg)$ http://yoursite.com/hotlinked.gif [R,NC]
Please notice that in this case, the image replaces only gifs and jpgs with your custom image.
The last method is rarely used, because it takes much more effort to implement, and requires php. But the last method has the added benefit of allowing people to link to your image, which the aforementioned methods do not allow. For example, if someone likes your image and decides to link to it, when the page loads, it will show the referrer as the page that linked to it–which means the RewriteRule from above takes effect, and the above code will deny or replace it. Yet you may not want to deny viewers from seeing your image in such a situation, since the person linking your image is not stealing it for their own use, but is actively referring their visitors to your content.
The idea is to change all requests for a picture file to instead serve an html file that shows the image requested. If someone hotlinks this image, the request will fail, because what your site will serve them is an html file, and browsers will be unable to render the file, and instead will show the generic image placeholder. But if someone links to the image, they will silently be redirected to an html page which will not only show them the image they wanted, but also provide links back to the rest of your content! So with this method, you disallow hotlinkers, and yet provide image linkers with the image they wanted, plus additional content that you specify.
There are two drawbacks to this final method: first, you must be using php; second, you will not be able to serve up an alternate image to hotlinkers. For an in-depth description of how to implement html document serving on image requests, see Thomas Scott’s excellent article on AListApart.

25 August, 2007

A Short Introduction to Brane Theory

[EDIT: This entry was never finished, but I'm publishing as is anyway. I apologize in advance for poor formatting and conceptual editing. At some point, I may revisit the topic.]

In this short introduction to Brane Theory, I will be looking at what the many theories deaing with branes that theoretical physicists are currently working on is all about, so that when I speak in future entries about branes, you won't be completely lost. Space as we see it is three-dimensional, meaning that there are three fundamental 'directions', or in a technical sense, that three is the minimum number of co-ordinates required to specify a point in space. Okay, so you realize that space as we see it is 3 dimensional, and time is an additional, yet different dimension, in that it flows in only one direction, and that the universe seems to have a distinct preference for one direction over another. 6:15 PM Einstein showed that space and time are interlinked to such a degree that they complement one another perfectly in just such a way as to make the speed of light constant; if time is dilated, space is lengthed by just enough to keep the speed of light (c) constant. So instead of speaking in terms of 3 dimensions, it is clear that time is extremely similar to the rest except in the respects pointed out above. 6:17 PM Gravity, according to gen rel, is a feature of spacetime geometry itself. It is not so much a force in the classical sense, nor even in the quantum mechanical sense, as it has to do with the geometry of spacetime rather than the propulsion of intermediary particles. 6:18 PM So far, I think you're already very conversant in what I'm saying. But the next step is a recent development, and I'm not sure if you've heard of it. Have you heard of brane theory? Dorek: yes it is a theory of the origin of the universe, as far as i know 6:19 PM i don't know much beyond that me: Yes. It involves extra-dimensionality that isn't kaluza-klein. I'll explain, but stop me if I start on something you already know. 6:20 PM Typically, whenever extra dimensions are thought about, it follows the kaluza-klein theory: that is, that extra dimensions are so small that we can't ordinarily perceive them. It is like a garden hose: from a great distance, it appears one-dimensional, though it's surface actually has two (and volume has three). 6:21 PM A Kaluza-Klein dimension is a fourth spatial dimension that is curved in upon itself (such as a garden hose's surface curves in on itself in one of its two dimensions) but is so small that we do not actually see it. 6:22 PM It is just a theory of course, but if kk dimensions exist, they would have to be on the order of less than hundredth of a millimeter, since extra dimensions would have noticable effects with gravity, and we have verfied general relativity up to a hundredth of a millimeter. Dorek: hold on it's dinner now 6:23 PM but i am interested in hearing what you have to say i will be back shortly me: Okay. Take yout ime. I'll be here awhile. -------------------------------------------------------------------------------- 8 minutes 6:31 PM Dorek: ok me: Back already? That was quick. Dorek: i'm back 6:32 PM me: Must have been a short dinner. Dorek: it lasted from 5:23 to 5:32 6:33 PM me: Where was I? Oh, Kaluza-Klein theory.... Did I give a sufficient idea of what that means? 6:34 PM Dorek: yes me: Keep in mind, of course, that talking about extra-dimensionality is a step away from what we know to a very high degree of likliness is true, and goes into theorizing that won't be experimentally verifiable until the large hadron collider opens in CERN, switzerland, in late 2008. 6:35 PM Then again, superstring theory is completely unverifiable until we get particle accelerators that are a trillion times more powerful than we currently have, and yet superstring theorists get NOVA PBS specials and all kinds of good press. But I digress. 6:36 PM Dorek: those damned liberals and their public tv 6:37 PM me: As recently as the mid-nineties, a new theory of extra-dimensionality came into (second-place) prominence (always after superstrings, of course): brane theory. 6:38 PM The idea is that there are extra spatial dimensions, just like KK theory. But in this case, there are objects within the larger spacetime continuum that have a very peculiar property: 6:39 PM They restrict the movement of certain particles upon the 'surface' of the brane. To explain, let me mention a historical note. 6:40 PM The reason kk theory developed (1920 or so, I think) is because gen rel seemed t work really well in five dimensions. But it is obvious to everypne that there is no fifth dimension: if there were, we could see it, since, presumably, photons would go in that direction, and bounce back tio hit our eyes. 6:41 PM So Kaluza proposed (and Klein later mathematically showed) that the fifth dimensioncould be really small, and we wouldn't be able to detect its existence. Of course, kk theory in terms of gen rel made predictions that turned out to be false, so we know of it now as a failed theory. But this is beside the point. 6:42 PM If you have a dimension big enough, we should be able to see it. So if you propose a new dimension, there has to be a way to keep it invisible to us. Brane theory does this. 6:43 PM In a larger spacetime continuum, there is (presumably) a brane that happens to have three spatial dimensions. On its 'surface' (I use the word in a technical sense), certain particles are trapped. 6:44 PM Thus, if I shine a flashlight, its photons can never leave the brane. This applies to all particles that physics has discovered: leptons, bosons, and gauge force particles. 6:45 PM At first, it seems to be just a weird way of describing reality, since we could be on a 3-brane and not even know it--it seems, at first, to be identical to living just in 3-space. 6:46 PM But it has a distinct difference: gravity is determined by the shape of space, not be intermediary particles. So gravity in a 3-brane in X-space is fundamentally different from just a 3-space. 6:47 PM In fact, if you determine the properties of gravity sufficiently, that will be the only way we now know of directly understanding the shape of spacetime beyone our brane. In this way, extra-dimensions can be as large as you want, and we still would not have found them already, since almost all of our methods of detection would use particles thatare trapped on the brane. 6:48 PM So far, I'm just repeating what brane theorists have been working on for the last ten years. They were a distinct minority until 2001 in the physics community because the superstring theorists were dominating the field. Dorek : hmm so it is less of an attempt at explaining other possible dimensions rather than an explanation for why we can't see more than 4 6:49 PM besides of course that there might be no more me: Well, it's a model for a universe that could exist, and that has ramifications that, if it were to exist, would be verifiable by experimentalists. 6:50 PM There are many such models that have been accepted and later rejected in physics. Dorek : oh i see me : One thing that goes against simple 3-space with no extra dimensions is that the standard model of physics has 30-something constants that we can't explain nor otherwise account for. 6:51 PM Many of these constants could be explained, if there were extra dimensions to account for the math. 6:52 PM The standard model is accepted as gospel because it works tirelessly: it predicts outcomes to an unprecedented degree of accuracy. But the standard model is just a chart of numbers: there's no explanation, for example, of why the numbers are as they are. 6:53 PM Using extra-dimensionality, theorists are trying to explain these numbers in terms of far fewer constants: string theory, for example, has only one constant, from which every other constant is derivable. 6:54 PM That's what made string theory so beautiful and enticing to many physicists, and it also explains why although year after year more and more evidence accumulates against stringtheory, the physicists still hang on to it, almost as a crutch. 6:55 PM Of course, in 2001, it turned out that string theory is mathematically equivalent to a specific kind of brane theory, and so since then everybody's been working on branes. But string theory limits itself to a very peculiar sort of brane theory, which I am not conversant enough in to go into detail about. 6:56 PM Anyway, I've tried to give a short, somewhat generalized description of brane theory as it stands today. 6:57 PM Obviously, there's much I didn't go into, such as the realization that with brane theory, the dramatic difference in power between the fundamental forces can be explained, and other ideas. But this is enough to start you onto where I had a thought, and explain what I've been working on lately. 6:58 PM So starting here, I'm going to be talking not about what others have done, but what I'm considering. As such, if you have questions, or if you notice inconsistencies, please let me know. 6:59 PM Symmetry has long been an important figure in physics. Symmetry across time, space, rotation, etc. are all fundamental to understanding what we already know. 7:00 PM So much so that when a new type of symmetry was discovered possible, many physicists actuively believe that it is in fact reality. 7:01 PM Supersymmetry was discovered as a possible concept in the eighties, and its predictions cannot be verified as true or false until the LHC comes online in 2008. Yet many, many physicists believe in it actively already. What I thought about was a new kind of symmetry. A dimensional symmetry. 7:02 PM We live in what appears to be 3-space, with three spatial dimensions. 7:03 PM If I wanted to be pedantic and describe something quite meaningless, I could instead say we live in 6 dimensions, but that there are three pairs of symmetric directions. Instead of left-right being a dimension in 3-space, I could instead say that there is left as a dimension in itself, and right as a dimension in itself: but that they are symmetric. 7:04 PM Specifically, when one increases, the other decreases, and by the same amount. Effectively, it is exactly the same as 3-space, but you get the idea, right? Dorek : ok 7:05 PM me: I'm sure many had this thought before, but didn't go anywhere with it, because it doesn't do anything different. But now we have brane theory. So a new thought arises. When you look at each of these 'half-dimensions', you notice certain peculiarites. First, they are direction-specific: in each case, they are always increasing. The slope is always positive when graphed versus time. 7:06 PM This is reminiscent of time as a dimension: it is also uni-directional. 7:07 PM So I thought: what if these half-dimensions are the true reality, and they're all perfectly simliar and symmetric. Yet time's counterpart happens to not be on this particular brane. 7:08 PM The idea is that we are actually in higher dimensional space, and time's symmetric counterpart is not on this brane. But the implication is strong: _this would explain why time is considered different from lateral dimensions_. 7:09 PM The idea is that it wouldn't matter what dimension you plot against, so long as you only plot against one single 'half-dimension', so a definite direction can be shown. Now that you get the basic idea of my premise, I'll explain the math of it, and show you how far I've gotten with it. 7:10 PM In gen rel, time is treated as a special dimension, and in every equation where other dimensions appear as variables, time always appears alongside c^2 and some other stuff. 7:11 PM Without this, the equations don't work. So I've started to work out combinations of variables such that we can rewrite x^2 + y^2 + z^2 + c^2t^2 as: 7:12 PM f(x1,x2)^2 + (f(y1,y2)^2 + .. etc. 7:13 PM The idea is to come up with a mathematically valid way of rewriting the equations such that each instance of a dimension can be written instead as a function of two dimensions that look similar to how time looks all on its own. 7:14 PM I admit that finding such would not be ironclad proof by any means, but if such a matematical expression exists, then it would at least allow the possibility of my idea to be true. 7:15 PM Once the math is found, then it will be easy to point out that my idea follows the rest of physics exactly in most every respect, while introducing a new symmetry, and it also would have an observable consequence. 7:17 PM If true, and time does have a counterpart, and if that symmetric relationship is identical to the relationship between lateral dimensions, then gravity must 'flow' toward those directions as well. 7:18 PM In other words, if you looked at gravity in a 5-space world with a 4-brane (spacetime), you'd see a peculiar effect of gravity that isn't possible unless we really are a brane in 5-space. 7:19 PM Similarly, if we looked at gravity in a 6-space with a 4-brane, you'd see a similar, but quantitiatively dfifferent peculiar effect of gravity. When the LHC comes online in 2008, we will be able to actually measure this peculiar effect. 7:20 PM Brane theorists today hope that the measurement (if it occurs at all) will correspond to the dozens upon dozens of different dimensionalities that are proposed today. Whichever it agrees with will be what physics has to rely on, because we have to follow what experiment tells us. String theorists are hoping, by the way, for evidence of 10 or 11 dimensions, because one of those is required by string theory. So here's the thing: 7:21 PM I want to work out the math on this, and quick, before the LHC comes online. Afterward will be too late. If it happens to be true (probably not, but whatever), then its strength as a theory depends on whether or not the resultsa are predicted before they are obtained. 7:22 PM I need to work out the quantitative peculiar effects before the LHC experimentally shows us what they are. 7:23 PM Presumably, the quantitative effects for my idea would be in-between the effects seen for predictions of a 5-space or a 6-space, because in my idea, there would actually be 5.5-space or 6.5 space, owing to the extra half dimension of time. But I don't know enough math to determine such effects yet. 7:24 PM Dorek : hey sorry my foot just hit the reset button accidentally me: No prob. 7:25 PM Dorek : the last thing you were saying is that you need to work this out before the experiment comes online me: I need to work out the quantitative peculiar effects before the LHC experimentally shows us what they are. Dorek: yes me: Presumably, the quantitative effects for my idea would be in-between the effects seen for predictions of a 5-space or a 6-space, because in my idea, there would actually be 5.5-space or 6.5 space, owing to the extra half dimension of time. But I don't know enough math to determine such effects yet. 7:26 PM Dorek: ok me: And it's pointless to even try if there is no way to rewrite currently accepted equations as functions of two 'half-dimensions'. Why go through all the work of finding out the quantitative predictions if the idea can't work in the first place? So I need to verify first that it's at least _possible_, in theory. 7:27 PM Only then would I start on working out the quantitative effects, in order to predict possible results that we may get in 2008. 7:28 PM me: The thing is: this idea could have occurred to any number of physicists already, yet they're not saying anything publicly. So either they haven't worked out the idea enough to make a prediction yet, or it's not even possible in theory, so they've discarded it. Or, I guess, as a distant possibility, I may have been the first to think of it again since brane theory developed. 7:29 PM Either way, I need to do a lot of work to get this done, and it's been what's preoccupied my time for the last week or so. Even if it's completely wrong in reality, if it's workable in theory, then it will be enough to actually publish in a journal. 7:31 PM At this stage, I'm just looking for ways to translate all the accepted equations involving dimensions into equations involving half-dimensions, such that at least one of the halves is similar to how time is treated in the equation. The problem is I can't use c, since it's in terms of space per time. So I have to create an analog of space per space, which sounds weird at first, but is perfectly doable. 7:32 PM It's just that no one's ever done it before. At least not that I've researched. So... Any comments? Dorek: hmm 7:33 PM i understand what you are seeing 7:34 PM but unfortunately my background in physics and mathematics are not good enough to grasp the idea of putting the concept into mathematical formulas 7:35 PM i guess i would first need to know the current accepted formulas 7:36 PM me : Not counting the math, then, do you feel like the idea is conceptually sound? No glaring difficulties that I haven't noticed? 7:38 PM If I were to send you a list of accepted formulas involving dimensions, would you be interested in looking at them thoroughly enough to where you could help with my project? I haven't talked to anyone else about this yet... Dorek: no, in fact when you first expressed time as being a simple half-dimension that is located outside the dimensions that are located fully within our space it seemed pretty ingenious 7:39 PM if i understood what you were saying correctly sure i'd help you me: That sounds great. I was hoping that the first time I told someone about this, I'd get a positive response. 7:40 PM I was afraid to go to an actual physicist first, because I hadn't done any of the math yet, and they could easily pre-empt my idea. Dorek: if you send me the formulas, i'll study them me: But if you're willing to slog through the math, I'd really like to coauthor a paper with you. Dorek: also, if you could give me any material that would catch me up to you, in terms of physics and possibly math i'd like to look at that as well me: Sure... Dorek: books, or anything 7:41 PM me: For a historical treatment of brane thoery from one of the physicists that worked on during the surperstring years, written in a good style, I might recommend... hold on, I forgot the name of it. one sec. 7:45 PM Warped Passages by Lisa randall, published 2005. 7:47 PM For a broader view, so you can get to know physics from a philosophy of science point of view, I recommend: The trouble with Physics, by Lee Smolin, 2006. 7:48 PM These are not textbooks, so you should have little difficulty getting through them. 7:49 PM As for explaining the math, what I'll do is send you a collection of accepted equations that involve dimensions, and for each one, I'll tell you where it's from, and what it means. 7:50 PM All that has to be done with them is figure out a way to rewrite them so that every dimension term is separated as a function of two half-dimension terms that are inversely proportional to one another. 7:51 PM AND at least one of these half-dimensions must look similar to how the time dimension is treated in that same equation, so we can make the argument that we could restructure the whole equation in terms of any half-dimension we so chose, as long as it's complementary dimension is not in this brane. 7:53 PM You know enough math to realize that there are probably an infinite number of ways to restructure an equation in terms of whatever the hell you want, but some restructuring can't be done, like arithmetic with infinity, or division by zero or some other such thing. And since this involves inverse proportionality, I'm mainly worried about avoiding division by zero in the restructuring. 7:55 PM Once that's accomplished, the next part will be the really hard part: we'll have to make quantitative predictions using methods that I don't yet understand that brane theorists are currentlyutilizing to make their predictions. 7:56 PM But once we've shown that it can be done, I think that will be enough motivation to go out there and start learning what's needed to do that next step. And even if it turns out to be nothing more than a neat mathematical trick, it'll still be a fun and interesting way to spend our free time. (Or at least that's how I view it.) 7:57 PM Dorek: it sounds like quite a task 7:58 PM but i've been recently thinking that i've not been utilizing my free time productively enough i'll read up on the material you send, as well as the two books i may need more than that, but i'll start with what you given 7:59 PM me : Excellent. I'll be sending along those equations soon; I'd rather not have to type them in, and I don't have access to a scanner, so I'll do go back to my original sources to find a few webpages that will give them to you. I'll make sure to make it explicit where on the pages they'll be located. 8:01 PM Hopefully, the local library may carry those two books; if not, I'm sure you can find them at B&N, if you care to sit in the cafe while reading, or you might just buy them altogether. Dorek: awesome me: At worst, you could use an intelibrary loan. Dorek: also, if you could cut paste and email me the text of this conversation i lost half me: You can see the text in chats, on the bar on the left side of the screen. Dorek: i was going to go to bn tomorrow afternoon anyways