Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Given all the uncertainties, how is a theory made viable?

Scientific theory is born of assumption and bits of unconnected evidence cemented by speculations, associations and a good bit of faith. Given all the uncertainties, how is a theory made viable? WHAT WE BELIEVE BUT CANNOT PROVE: TODAY'S LEADING THINKERS ON SCIENCE IN THE AGE OF CERTAINTY represents the author's interviews with a group of leading scientists and thinkers on the question: What do you believe to be true even though you can't prove it. The answers will amaze you - and you don't have to be a scientist to find them lively and engrossing reflections.Diane C. Donovan, EditorCalifornia Bookwatch