We often talk as though we are in direct contact with reality - as though our eyes show us the world, and our minds read off the facts. But between whatever reality fundamentally is and the experience you're having right now, there are a surprising number of layers. At each layer, two types of error happen: information gets left out, and bias creeps in. By the time experience reaches you, there's the potential for a great deal of both to have accumulated.  Put another way, rather than p...