"Many questions about human cognitive evolution may remain forever unanswered, by the standards of mainstream evolutionary biology, especially those concerning what past selection was for. We need to acknowledge at the outset that the self-domestication hypothesis may fall into this category.
This counsel of humility, given the obstacles just described, goes completely unheeded by many, especially those prone to making bold claims about human nature based on the slightest evidence that a trait is adaptive. From human ethology to sociobiology to evolutionary psychology, there has been an overwhelming tendency to blithely ignore the evidential standards of mainstream evolutionary biology. Evolutionary psychologists are in many ways the worst offenders; the assumptions that distinguish evolutionary psychology from its predecessors provide quite effective insulation from empirical assault."
I like this guy.
"Wild mice also have spectacular jumping ability, which Steven Austad likened to popping popcorn. This capacity has been bred out of lab mice. To stay with the popcorn metaphor, lab mice are the unpopped kernels (UPKs) at the bottom of the microwave popcorn bag. Scientists and mouse fanciers alike prefer their mice that way. In any case, non-UPKs took themselves out of the domesticated breeding pool by popping to freedom."
I'm kind of picturing mice doing somersaults out of bags now...