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The Perfect Way To Slice a Pizza 282

iamapizza writes "New Scientist reports on the quest of two math boffins for the perfect way to slice a pizza. It's an interesting and in-depth article; 'The problem that bothered them was this. Suppose the harried waiter cuts the pizza off-center, but with all the edge-to-edge cuts crossing at a single point, and with the same angle between adjacent cuts. The off-center cuts mean the slices will not all be the same size, so if two people take turns to take neighboring slices, will they get equal shares by the time they have gone right round the pizza — and if not, who will get more?' This is useful, of course, if you're familiar with the concept of 'sharing' a pizza."

Comment Re:They are better than "Forests" for global warmi (Score 1) 207

No, they're not evil. In the grand scheme of things, a forest, even a mostly monoculture forest, is better than a wasteland. But, I would argue that this monoculture is not even remotely the equivalent of the diverse ecosystem that it replaced. Could it eventually become something a bit more diverse, in time? Sure. So could a corn field, if left alone long enough.
Space

Big Dipper "Star" Actually a Sextuplet System 88

Theosis sends word that an astronomer at the University of Rochester and his colleagues have made the surprise discovery that Alcor, one of the brightest stars in the Big Dipper, is actually two stars; and it is apparently gravitationally bound to the four-star Mizar system, making the whole group a sextuplet. This would make the Mizar-Alcor sextuplet the second-nearest such system known. The discovery is especially surprising because Alcor is one of the most studied stars in the sky. The Mizar-Alcor system has been involved in many "firsts" in the history of astronomy: "Benedetto Castelli, Galileo's protege and collaborator, first observed with a telescope that Mizar was not a single star in 1617, and Galileo observed it a week after hearing about this from Castelli, and noted it in his notebooks... Those two stars, called Mizar A and Mizar B, together with Alcor, in 1857 became the first binary stars ever photographed through a telescope. In 1890, Mizar A was discovered to itself be a binary, being the first binary to be discovered using spectroscopy. In 1908, spectroscopy revealed that Mizar B was also a pair of stars, making the group the first-known quintuple star system."

Comment Acknowledge fuzziness (Score 1) 1747

The thing that's happening here is that what's becoming more obvious to the general public is the sort of fuzziness of scientific truth. From the scientific perspective, this isn't exactly a huge revelation. You're always sort of struggling towards this "Truth" which is always going to be unreachable and the process of struggling is messy and politicized. Big deal. Happens in physics just as much as in climatology, just that the latter involves way more money and touches directly on areas of public policy.

But the problem is that the public still has this illusion, on some level or another, of what science is, reifying it as this pure pursuit of a knowledge that is, in the end, both perfectly attainable and absolute. When you acknowledge the fuzziness, they see that as an acknowledgement that the whole lot is fallible and sort of useless. It's the whole multiple definition of "theory" thing all over again. The public is a lot less comfortable with doubt, messy processes and fuzzy goals than are scientists.

Comment Re:They opened up? (Score 2, Interesting) 246

Similar experience for me. Used to read them all the time. When they went pay, I stuck with it for a bit, using that kind of confusing advertising funded day pass thing. Then I just sort of stopped. Back around the election I started checking them out again, and was surprised to find them totally open. But, even with the openness, and even knowing that they actually have some fairly good articles, I'd gotten into a routine of only really checking a few key news-type sites. Salon wasn't in that routine, so I have to make an effort to remember to look at it. Says more about my own laziness, I suppose, but I doubt I'm the only one.

Comment Re:Pussy. There, I said it. (Score 1) 643

>>>To all of you who think that it's some kind of social repression to frown upon people who make a habbit of unashamedly expressing themselves in a vulgar and crass manner >>>

Please define "vulgarity" and explain why these words are vulgar, but not others. For example why it is okay to say "defecate" or "poo" but not "shit"? Or "intercourse" but not "fuck"? Why is it okay to say "I'm eating beef and ham for supper" but not "I'm eating cow and pig for supper"? If you can convince me why some words are bad to use, I'll stop using them; otherwise not.

Point -

- I get a little fed up with these arbitrary cultural rules that seem to have no basis for existing.

Words that originate in Latin tend to be seen as of higher status than those with an Anglo-Saxon origin. Hence "defecate" rather than "shit" and "beef" rather than "cow." (For a while beef was even used to refer to living cows, not simply to the end result of killing and butchering one). It is nonsensical and arbitrary (your point, I take it), but that's some of the reasoning behind it.

Comment Re:containment theory... (Score 1) 1032

Probably worth mentioning that, when you say "Muslim" you seem to in fact mean "Arab". And, of course, Irannian != Arab. Iranian = Persian. So there's no great cognitive dissonance in Iranian anti-semitism.

There's also the fact that not all Arabs are Muslim and not all Muslims are Arab (see Indonesia). And that it's not entirely unreasonable to speak of the Jewish people, when you are examining a shared cultural history. Or even when looking at genetic commonalities - the Ashkenazi Jews of Eastern Europe were a fairly self contained community for a good long time.

So there's more than a little confusion evident in your post, and not really any hard facts.

Comment Re:New Alert System (Score 1) 320

I doubt one could come up with a single such example. And that raises an interesting question: are there no such examples because there were scads of people exercising their 2nd Amendment rights outside of Bush events? Or are there no such examples because there were simply no cases in which anyone happened to openly tote a gun about near such an event?

I'd be inclined to go with the latter, raising a further question: if no one, at any point, decided to exercise their 2nd Amendment rights within shouting distance of a Bush event, why was that so? And furthermore, why might it be the case that so many have decided to now, under a new president, exercise these rights? Is it simply that they didn't feel like doing so earlier, or are they trying to make a further point? If so, what is that point, and how is it served by accompanying it with a weapon?

Comment Re:slow data (Score 1) 551

I don't have an iPhone, but a good friend does, and he's on AT&T. We're located in western North Carolina. Service is pretty good in Asheville - the only largish city, but even a few miles outside, it's just crap. It's pretty rare that I call up my friend and don't immediately get voice mail.

Comment Re:That Analogy Falls Apart (Score 1) 917

One might also think about how well we have managed to self adapt in the Antarctic, a place that's rather less than 9 months away, but where we tend to require things like planes flying in to drop off food, medicine and porn on a relatively frequent basis. If we manage to pull off self-sufficiency there, then maybe there's a chance of doing it on Mars - otherwise, I don't think this may be the best of arguments.

Comment Re:Depends on price paid (Score 2, Interesting) 175

Agreed. I don't really mind streaming, since it can expose me to music I might not otherwise hear (pretty much the sole benefit, as far as I'm concerned), but I can't see the benefit in paying all that much for it. And frankly, I'd rather do my streaming on my home machine, where the data prices come cheap. If I hear something I like, I can always buy/download and copy it over to the mobile.

I realize, however, that my personal preference here is unlikely to count for much, since more money can be sucked from me under paid streaming.

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