PaleoVeganology: R.I.P., E.T.H. (Expensive-Tissue Hypothesis)?
Another interesting post at the PaleoVeganology blog.
“In short, if the evolutionary pattern of hominid brain size is steady rather than punctuated, and if butchery and meat-eating have been part of hominid behavior since the days of the australopithecines, then the likelihood that meat-eating and hunting sparked sudden increases in cranial capacity goes down considerably.
“This is not to dismiss the ETH out-of-hand. It’s a serious and legitimate hypothesis, with experimental support in the literature… It may turn out to be true; many other respected theories began this way. But the appeal of its simplicity is also its danger.”