Finding Our Tongues: Mothers, Infants, and the Origins of Language

This is interesting so far. The idea behind it all is our upright walking created smaller birth canals (well established) which created the need for smaller, more dependent babies (well established), which created the need to talk to babies because the babies weren't strong enough to cling to mom's tummy or back and thus got laid down nearby while mom took care of various tasks (makes sense...). This created motherese (debatable) which was the beginning of language (the author's pet theory). Totally interesting.

I read two thirds of this, but can't bother finishing it. The theory is interesting, but unprovable either way. Reading the German translation may be part of the problem.