[Update: Prof. Anderson was kind enough to reply in the comments.] Another somewhat problematic response to Brockman's World Question Center is given by Philip Anderson, one of the world's leading condensed-matter theorists. Like fellow Nobel Laureate Robert Laughlin, Anderson takes a certain pleasure in tweaking the noses of his friends on the high-energy/astrophysics side of the department. We can all use a little tweaking now and then, but must be expected to get tweaked back in return. Anderson talks about dark matter and dark energy; his piece is short enough that we can go through the whole thing.
Dark Energy might not exist
I hope this idea isn't too dangerous, by the way, since certain of your favorite bloggers have been quite active in this area. Overall, one gets the impression in the World Question Center that these folks somewhat overestimate how dangerous they are really being.
