I first stumbled across HBAHG over 15 years ago and I have read it several times in paperback. I have just bought a nice new 2005 version to update the situation. Overall an enthralling read. Whatever your opinion may be from 'plausible' to 'utter tosh', I doubt that anybody with an open mind cannot fail to be either entertained or at least stimutaled to consider "what if....?". Buy, read enjoy. however, to REALLY get into the situation, I would highly recommend that you pair this book with "The Tomb of God" by R.Andrews & P. Schellenberger. get the hardback if you can for better diagrams, I wore out a copy of the paperback by 'thumbing' thru it.. All in all, two very diverting books... Go on, you know that you need too...! Enjoy.