I wish I could vote this up several times because of, well, confirmation bias. It's seemed to me that evolutionary psych makes a lot of stew from very little meat, and it looks as though there's even less meat than I thought-- the article says that there's much less evidence of a female preference for male symmetry than was previously believed.

Meanwhile, I wonder if some of the fading of results isn't just publication bias, it's that biological details change faster than we realize. Drugs that work for schizophrenia might stop working as well because people are eating different additives or somesuch.

A simulation hypothesis is fun, of course-- we're being toyed with and/or the program is slightly unstable.