For me, this book has become more significant with time and it has highlighted the imagination and foresight of the author at the time it was written in 1982,. New science in the 21st century has proven some of the ideas in the noval, for example, neanderthal burial styles.This book also would challenge many religious scholars to think beyond the confines of the dogmas of any particular religion. I've heard about some controversy about about the racist overtones but I actually think if you're coming from a different perspective it is deeply educated in it's approach to figuring why humanity had racism built into our psyche from the early stages of civilisation . Truely amazing. writing.