Since I'm not sure if this is an abridged version, it's hard to say how good it is. If it's abridged, the book itself might be better. How it is now, it leaves a lot to be desired- like references.
Or perhaps it's my lack of knowledge of what he is talking about half of the time. It's hard to tell when and what he's refering to much of the time on one hand and on the other, most of it is hardly elaborated on; rather mostly he states things as fact when I have no idea where it even came from.
Having said that, interesting points are brought up and if I listen to it again I might be able to put a few things together that I missed during the first run. Even if most of it is hearsay, it's worth listening to if only to be exposed to his ideas.