But the real villain is hands and opposable thumbs, right? They’re part and parcel of all the bad stuff humans do. The back pain is incidental.
They might be onto something. After all, they are looking at a restricted type of evidence that may be abundant enough to enable a reasonable decision about some fossils. A far cry from the hype we so often hear.
Carol Ward: It seems to be a behavior that was present in some of the earliest members of our branch of the family tree. It represented what was really the initial major adaptive change from any apelike creature that came before us.
Funny, if bipedalism originated in a global catastrophe, that it never occurred to any other primate to resolve the problem by becoming fully bipedal. But keep thinking. Resist groupthink.
How about this: Breasts and bipedalism both evolved to create a market for theories.