The document discusses how people cling to their beliefs from childhood to avoid imagined disasters. It makes three key points: 1) As infants, people make decisions about themselves and the world to avoid some terrible catastrophe, and they cling to these beliefs as they grow up. 2) Every time people's beliefs are confirmed, it makes the imagined disaster seem less likely if they change their behavior. 3) People act according to their beliefs, thinking the pain of their current behavior is less than the unknown disaster of changing.