https://en.wikipedia.org/wiki/Catching_Fire:_How_Cooking_Made_Us_Human https://en.wikipedia.org/wiki/Catching_Fire:_How_Cooking_Mad... By the way, the document

https://en.wikipedia.org/wiki/Catching_Fire:_How_Cooking_Made_Us_Human https://en.wikipedia.org/wiki/Catching_Fire:_How_Cooking_Mad... By the way, the documentary I cited above, goes into this assertion a bit, in a reevaluation of the fossil record (which motivated that 10 year old book), using more accurate current analyses, and finds an entirely different, and surprising, result. What's really true, I don't know...just find it all interesting.