Category Archives: science

Questions and Answers about Theories of Everything

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joke hollywood star of brian greene Sometimes the journalists and editors get it right. In fact, they get it right a lot of the time, but you hear more about the complaints (sometimes from me, sometimes elsewhere) about them getting it wrong, when it comes to things like science coverage especially. What am I talking about? I’m talking about the set of questions and answers that are in a new article on MSNBC that a number of people pointed out to me yesterday and today. It starts out as an article about Brian Greene’s science outreach efforts (books, and tv and movie appearances, including a new one), with some discussion of how this is regarded by his colleagues, the value it has had in raising public awareness of physics (and fundamental science in general, I would argue), and so forth. All that is interesting, but not nearly as interesting to me right now as the later parts of the article which is simply a question and answer session. (Picture above right is from a fun joke I carried out last year that you can read here – be sure to read the comments too.)

Alan Boyle, the science editor, asks Brian a series of very thoughtful questions, and Brian gives some very thoughtful answers. The topics include research in string theory (of course), hopes and possibilities for experimental and observational results (such as from the LHC and Planck) that can inform and ultimately test the ideas coming from string theory and open up new vistas in fundamental physics, research on issues such as the landscape and the idea of multiple universes, research on better developing our understanding of string theory (to the point where we can, it is hoped, extract firm predictions from it), and many other things. (I wrote an introduction to aspects of the landscape issue here, and talked a bit about a Tom Siegfried article on the discussion amongst researchers here.)

It is nice to see an honest, non-inflammatory and non-hyped conversation about the issues, and read Brian’s personal take on some of these matters. The bottom is, […] Click to continue reading this post →

Categorically Not! – Vulgarization

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The next Categorically Not! is Sunday 25th March. The Categorically Not! series of events that are held at the Santa Monica Art Studios, (with occasional exceptions). It’s a series – started and run by science writer K. C. Cole – of fun and informative conversations deliberately ignoring the traditional boundaries between art, science, humanities, and other subjects. I strongly encourage you to come to them if you’re in the area. There’s a new website showing past and upcoming events here. You can also have a look at some of the descriptions I did of some events in some earlier posts (such as here and here), and the description of some of the recent special ones on Point of View and Uncertainty that I organized with K. C. as USC campus events (here, here (with video) and here).

Here is a description from the poster for the upcoming programme: […]
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E8

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E8 and the Gosset polytope 421

No, not another flower from my garden. This is a two dimensional projection (originally hand drawn in the 1960s by Peter McMullen, of a polytope that lives in eight dimensions, known as the Gossett polytope 421. Click here to be taken over to the American Institute for Mathematics (AIM) site for more information about it. (This image was computer generated by John Stembridge, and you can get higher resolution there for use on your T-shirts and so forth.)

What does this all pertain to? A new result from a team of mathematicians. They’ve done what some are calling the mathematician’s equivalent of mapping the genome of a Lie group, the one called E8. Groups pertain to symmetries. Symmetries are […] Click to continue reading this post →

More Scenes From the Storm in a Teacup, VII

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You can catch up on some of the earlier Scenes by looking at the posts listed at the end of this one. Through the course of doing those posts I’ve tried hard to summarize my views on the debate about the views of Smolin and Woit – especially hard to emphasize how the central point of their debate that is worth some actual discussion actually has nothing to do string theory at all. Basically, the whole business of singling out string theory as some sort of great evil is rather silly. If the debate is about anything (and it largely isn’t) it is about the process of doing scientific research (in any field), and the structure of academic careers in general. For the former matter, Smolin and Woit seem to have become frustrated with the standard channels through which detailed scientific debates are carried out and resolved, resorting to writing popular level books that put their rather distorted views on the issues into the public domain in a manner that serves only to muddle. On the latter, there is a constant claim that string theory and its proponents are somehow brainwashing and/or frogmarching young people into working on that area to the exclusion of all else. The authors seem oblivious to some simple facts to the contrary there: (1) that you simply can’t do that to genuinely smart, creative young people; (2) that even students who have string theorists as their Ph.D or postdoc advisors often work on non-string theory research topics (3) that they’re doing an excellent job of either driving young people away from working on some of their favourite alternatives – or from pursuing theoretical physics altogether – by failing to clearly explain their merits and by using the press to help turn this into a distorted spectacle.

I’ve summarized a lot of what I think in the latter part of this post.

There are two major problems with how live debates take place in the public sphere. One is that the average person listening to the debate cannot know whether much of what Smolin and Woit claim as facts are right or wrong (or anyone on the other side of the debate, for that matter). When someone disputes a […] Click to continue reading this post →

When Worlds Collide, II

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I think I ought to explain, as promised, why I am in New York. The first thing to mention is that I wrote the previous post in this miniseries (it was written on a flight to Dublin, and finally posted when I returned) before I knew about any of what I’m about to tell you, so it is rather funny to me…

casino royale shoot

The week that I returned from Dublin I noticed a phone message from an editor of a magazine asking me to return their call. A couple of days later I learned what it was about. It’s a magazine that largely focuses on buzz about people and projects in the entertainment and fashion industry – Music (R&B, Hip Hop mostly), Movies and TV, etc., as far as I can tell, along with some coverage of parts of the business world. Its readership is mostly younger African American males, I think. As far as I can tell, the intention is not to be about those things in particular, but it is largely reflecting the interests of the readership it is targeted at. It’s a major product, jumping out at you immediately when you are in the magazine store (the striking picture of a woman on the front helps it grab your attention, of course).

Each year, the magazine does a special issue featuring a group of individuals who are doing “major things” in the industries I mentioned above. It is a combination of a focus on new talent that’s about to become more widely known, or just bringing to readers’ attention the existence of some of the people who are making significant impact in what they’re doing.

Somehow – I do not know how – they got my name. It turns out that they spent some time reading some of things I’ve written here at Asymptotia too. Now normally, you’d expect things to stop at that point, but in fact it did not. They decided to broaden things out a bit and include me (if I was willing) in this year’s feature issue.

I thought about it for a day. It is quite an honour to be approached, and I’m also impressed that the magazine’s editors are being creative in this way (it would be easy […] Click to continue reading this post →

Through a Lens Darkly

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Richard Massey

Well, yesterday’s colloquium by Caltech’s Richard Massey was a lot of fun, and really excellent. When faculty, postdocs and students are all chatting about it afterwards, you know it went well. This is what a departmental colloquium is supposed to do, and it happens when subject, level of delivery and speaker all come together in just the right way.

When the news about that lovely dark matter result broke some months ago, I got in […] Click to continue reading this post →

Show and Tell

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Well, it is almost the last day of Black History Month and I am behind on answering the traditional emails I receive at this time of year. As I said last year (with a few modifications):

clifford v. johnson at the board Pretty soon after February starts, the deluge of email I get every day gets enhanced a bit by emails from students from all over America. I become part of an assignment, you see. It seems that these students are instructed to find a black scientist and write something about them and do a presentation to their class about them1.

I’m always willing to help with this sort of thing (see the footnote for why), and so I usually send some links: to my personal webpage (here), or one of two profile pages for me at USC here and here (the latter by Katherine Yungmee Kim), a Daily Trojan news story by Diya Chacko here, or the departmental page on me (here), and a list of publications, and I hope that this is all of some use.

As to the standard “what is your date of birth?” question that is usually asked too, I don’t pass out that information over the web, but if you’re an interested student, you can email me for a bit more information if you wish, although I will not give out the exact date.

For a bit of biographical narrative, students can look on the “My Hero Project” […] Click to continue reading this post →

New Directions in Real Estate?

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keats real estate imageOn NPR’s finance programme Marketplace yesterday, there was a somewhat unusual piece. It seems that conceptual artist Jonathan Keats is making some money by selling the extra dimensional rights to various properties in San Francisco! (You can see him at the Modernism Gallery there1).

Since there’s no known way to build on or otherwise occupy this new extra dimensional property (let me explain a bit further in an enormous footnote2), the prices are awfully reasonable. Here’s a transcript of a transaction that I found on their website. Reporter Nathaneal Johnson is observing a sale to punters Oscar Villalon and Mary Ladd:
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Light Seen Down Under?

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compact fluorescent bulbincandescent bulbI’ve been meaning to post about this for a few days*. It has since made it to rather high visibility in the news, I’m pleased to see, generating a lot of interesting discussion. The Australians (another nation not part of the original Kyoto agreement, notably) have pushed ahead on the issue of trying to legislatively encourage (shall we say) the use of compact fluorescent light bulbs over the more wasteful traditional incandescent bulbs.

You’ll recall my posting about this idea not long ago, in the context of proposed California legislation (so yes, I used the same images in the same way). Now, I’ll admit that I was thinking of that as a test case, and when things are ironed out into a workable legislation there one would imagine the model being rolled out to the rest of the world to adopt in their own fashion. I did not expect an entire country to adopt it so soon and at such a rate (they propose to stop sales of incandescents by 2010!).

We had a lot of discussion in that earlier thread about the pros and cons of this. Commenter IrrationalPoint (IP), for example, seems convinced that this represents a serious access problem for people who respond less favourably to the new lights. Such legislation is therefore discriminatory. My response to that was in several parts. The first is that I was not convinced that the cited flicker problems were really problems that referred to the new bulbs. They don’t work like the old nasty fluorescents we remember from years back, or that are still to be found in a lot of public spaces. Their flicker rate is up at tens of KHz, not the 60 Hz of old. IP (and one or two others) then suggested that the issues were with the spectrum. My response there was that the spectrum is quite a bit different from a lot fo the old lights, and where some discomfort might arise with the new ones, this is possibly only a problem for some if direct lighting from the light bulb is used. (I personally find direct light from incandescents pretty disturbing in a lot of cases too.) Why not use the bulbs in conjunction with a simple filter or other decorative fixture that can modify the light to your tastes?

But I am keeping an open mind on this. Perhaps I’m just wrong, and the whole idea of banning incandescents is unworkable and insensitive, but I am not convinced that work cannot be done to make sure that it works well for all concerned.

One of the biggest problems with the discussion is that nobody could point to good […] Click to continue reading this post →

That Feeling

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It is on the list of my top five all-time favourite feelings. But I know of no word for it in English that properly captures it. This is strange, since so much of our society relies on things that probably came about in accompaniment with this feeling. I’m sure you know what I’m talking about. Sometimes it come on so strongly that it feels like a switch has been flicked inside my head, with an almost audible “click”, often accompanied by a smile, an oral exclamation, or even a moan. Why can I not think of a word for it? Perhaps my vocabulary is failing me, but if there is not such a word, then we should set about forging a new one, since it is so important.

What am I talking about? […] Click to continue reading this post →