Originally Posted by Peegee
Funnily enough I've got it on the desk in front of me.
It's complete pseudoscience: he takes half a dozen pieces of unrelated "evidence" out of their historical/cultural context and jumps to wild conclusions from them. He just appeals to the general misconception that ancient civilisations were all cave dwelling savages and the human urge for big answers.
A lot of it's just plain wrong, for instance he claimed the Iron Pillar of Delhi contains "neither phosphorous nor sulphur" but it actually contains a large amount of phosphorous. He later admitted the pillar was man made.
It's a canny enough read, and thought provoking, but read the Wiki page on pseudoscience first, so you know what you are up against.