Wait. Barash’s hypothesis overlooks the fact that suffering is more than an alarm system. An alarm could be going off in an empty building.
Any attempt to demonstrate the sheer untenability of Darwinian postulates is just met with an ever-closer circling of the wagons.
If we want to effectively explain human behavior in all its messy richness, we would do well to look beyond this box of just-so stories.
Evolutionary psychologists are prone to make up just-so stories which are then passed off as being entirely veridical.
We are free to accept ad hoc evo psych explanations if we wish. Like astrology and palm reading, they make good conversation pieces.