If you are looking for a good book to get stuck into, this is a doozy. Kahneman explains how we think in two ways, the first he refers to as System 1 which is fast, intuitive, automatically, associative, quickly with not much control. The second, System 2, is slow, deliberate and takes work. The rub is how we put the two systems to use, essentially our brain takes the path of least resistance we roll with what System 1 tells us without even firing up System 2 – lazy brain. Anyway tackle this or watch a lecture here Enjoy!