Instruct: Classify the given review as either positive or negative.
Query: Mlodinow's rainbow

This book has nothing to do with Feynman, it is a book in which the author boast about what he did in his PhD thesis and tries to justify his choices of not doing science full-time (perhaps because not good enough.. don't get me wrong, there is nothing bad in it). I find pathetic the way the author uses Feynman's name to get attention and selling books. Not worth the money.