Carl Sagan and Immanuel Velikovsky Book

Sagan very politely disagreed with Velikovsky in the TV series Cosmos. He even went so far as to defend his right to have his ideas peer reviewed. Then Ginenthal writes a scathing book about Sagan essentially calling him a fraud. Not sure what the chip on his shoulder was all about, but any junior high science student could conclude that Velikovsky was not shelling out the $$ for the quality crack. Disagreement in science is essential. It doesn't mean you have to write a several hundred page book ripping the other scientist apart. There is obviously some misplaced loyalty at work here. This book is really only for those that want to know EVERY detail about Carl Sagan.