Are You Evolved?

Evolution seems to favor female promiscuity. The latest Human Nature column on Slate reports that:

"In a study of mouse-like marsupials, 'survival of babies with promiscuous mothers was almost three times as high as those in the monogamous group.' Takeaway for women: 'Polyandry improves female lifetime fitness.' Fine print: 'Males usually died after a short and intense single mating season due to exhaustion and aggressive encounters with other males.' (Did we mention that female promiscuity promotes big testicles and small brains in males?)"

This probably explains a personal ad I saw the other day:

Looking for Evolved Man
Fit, promiscuous single mom ISO exhausted and aggressive pinhead with massive testicles for short-term romance.