I take it I'm allowed to comment without having read more than a quarter of it. I found it utterly boring. I couldn't read it. The author works at a "Center for Cognitive Neuroscience", but this is in no way neuroscience, nor any science. It's a load of dusty old linguistics. It chats into other material at times, but that's the core. It has some cursory reports on psychological experiments, but it doesn't argue systematically with them. Looks like the chapters I didn't read are riddled with speculations about evolution.