Great book. One of those rare ones that gives solidity to ideas that you've often thought about but could never articulate. NNT talks about uncertainty, the nature of knowledge, the fallacies in the way we look at information and understand things and the way we do things based on such knowledge. He may come across as a bit arrogant and full of himself sometimes. And on the way to prove that we sometimes assume too much about what we know he also appears to assume too much just a tad when it comes to certain subjects (some arguments and examples are based on evolution - a claptrap theory with no proof to back it up - for instance). But for sheer insight and intelligent presentation of an idea that should be all too obvious to all of us but is sadly obscured by distraction and consumerist claptrap i will give this five stars.