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String theory has been the latest thing for 30 years, and hasn't delivered on any of its promises. There has been a constant outflow of people trained in quantum field theory into other fields, especially condensed matter physics and complexity, and they have seriously affected the development of the fields with their outlook (no value judgement here).

It's about time people gave up on Einstein's idea that "unification" is around the corner, and get to doing real physics. If unification happens, it will be discovered almost as a byproduct of something else, especially given the lack (and virtual impossibility) of direct experimental input.

The most promising areas of theoretical physics IMHO are in astroparticle physics and relativistics astrophysics generally, and in quantum optics. Both of them are healthy experimental and keep blowing my mind away every time a new discovery is announced.

guaranteed to evoke a violent reaction from police is to challenge their right to "define the situation." --- David Graeber citing Marc Cooper

by Migeru (migeru at eurotrib dot com) on Sun Jun 25th, 2006 at 08:06:45 AM EST
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It's about time people gave up on Einstein's idea that "unification" is around the corner, and get to doing real physics.

Yeah, maybe. I quit physics before I even got started, to do something more "useful", whatever that means. It seems like people are initially drawn to theoretical physics for some rather difficult to define emotional reasons. I have never tried to pose the question of "why physics?" to older theorists. I am very curious as to how they relate to their field. The ones that end up writing pop-sci books certainly all sound in awe of their discipline, in a way that is completely divorced from the applicability to anything of the theory. Maybe they sound like this because that is what the public wants? The people, when they think of scientists at all, like them to be eccentric, wiry haired, passionate, fascinating and fascinated. And this connects very well with unification, exotic theories, and all that jazz.
by someone (s0me1smail(a)gmail(d)com) on Sun Jun 25th, 2006 at 08:17:42 AM EST
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It's about time people gave up on Einstein's idea that "unification" is around the corner, and get to doing real physics

Wait, that's what they're looking for?  Isn't this basically the same as the alchemists of old, looking for the underlying "essence" of everything?

Maybe we can eventually make language a complete impediment to understanding. -Hobbes

by Izzy (izzy at eurotrib dot com) on Sun Jun 25th, 2006 at 11:03:28 AM EST
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Well - except for the parts about living forever and turning lead into gold.
by ThatBritGuy (thatbritguy (at) googlemail.com) on Sun Jun 25th, 2006 at 11:20:15 AM EST
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Okay, so they have better spin now than they did 300 years ago, or they're simply more cautious?  Now it's "building blocks" and "extending the human life-span."  Now I'm looking at it this way, that sounds awfully suspicous to me.

Maybe we can eventually make language a complete impediment to understanding. -Hobbes
by Izzy (izzy at eurotrib dot com) on Sun Jun 25th, 2006 at 11:39:15 AM EST
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Einstein wasted the last 20 years of his career pursuing electromagnetic-gravitational unification and ignoring experimental input from nuclear physics. Brilliant people like Ed Witten and Joe Polshinsky have wasted the last 30 years pursuing a mathematical theory with enticing physical implications without any experimental input or confirmation whatever.

guaranteed to evoke a violent reaction from police is to challenge their right to "define the situation." --- David Graeber citing Marc Cooper
by Migeru (migeru at eurotrib dot com) on Sun Jun 25th, 2006 at 11:26:10 AM EST
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Sorry, that's Polchinski.

guaranteed to evoke a violent reaction from police is to challenge their right to "define the situation." --- David Graeber citing Marc Cooper
by Migeru (migeru at eurotrib dot com) on Sun Jun 25th, 2006 at 12:42:28 PM EST
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