READ IT WHEN IT FIRST CAME OUT. WATCHED IT A NUMBER OF TIMES ON TV, THE TV VERSION DIFFERS SOMEWHAT FROM THE BOOK. SAW THE AUTHOR DISCUSSING THE BOOK WITH THOSE FAMILIAR WITH THE SCIENCE INVOLVED AND ALL CRITICS AGREED THAT THE AUTHOR GOT THE SCIENCE, FOR THE MOST PART ON THE MONEY. FINALLY DECIDED TO GET THIS COPY FOR MY OWN MODEST LIBRARY SO I CAN READ IT OVER AGAIN AS MANY TIMES AS I WISH.