This book might be a little old by now, and somewhat superceded by discoveries of other Austrolopithecines and Homo naledi, but it’s excellent for getting a solid understanding of the issues surrounding how we understand human evolution. It’s also excellent as a way of understanding the kind of environment that kind of research and debate is going on within — things have changed now in several ways, no doubt, but the methods of study and research are still true, and an understanding of the existing fossils –and how they were categorised — from when Johanson wrote is still useful.
I have to admit, I wondered about the obvious sour grapes between Johanson and the Leakeys that came up several times in this book. They were such renowned scientists — and honestly, I’d still remember their names before Johanson’s, despite the fame of ‘Lucy’ — but they were so wrong and so unscientific, in this view. It makes me wonder. Obviously, personal bias is likely to have coloured things here!
My favourite part was probably the final section, in which Johanson discussed theories about why humans are bipedal. It’s clearly argued, and while I agree with the critique mentioned in the book itself (I love the line “I’ve never seen an estrus fossil” as a retort), it mostly hangs pretty well together. (Basically: humans are bipedal to effectively look after children, increasing the number of offspring one woman can have; an advantage over most apes, who keep to one child at a time.)
Good stuff, still.