jacki: Opium did u read the whole book?
Read Ezekiel...:)
There are many evedence, pictures and ilustrations.
I have but remain unconvinced, the amount of proof one must provide in science is not unsubstantial and I am sorry to say his theory falls well short of those requirements.
It is all too vague and filled with general speculation. If you enjoyed the book then I am glad but speaking for myself, I cannot take his theory seriously.