Thinking is expensive for an animal – our brain consumes almost 20% of the energy of the body (even at rest). Hence, the brain takes whatever shortcuts it can to do less deliberate thinking (that requires more energy) and more automatic thinking (that requires less energy).
There’s another name for such automatic thinking: cognitive bias.
The word bias is used because our preprogrammed ways of thinking bias us towards paying more attention to certain information at the expense of ignoring other information. So, cognitive biases are systematic errors in viewing of the world. They are very hard to correct because you literally see the world through a lens that’s painted with cognitive biases. ...