It seems reasonable that we should know our own mind. But what we know is just one small aspect related to the controlling functions of consciousness. We are far less aware of other equally important parts of the brain.

Contrary to belief, we don't possess a unified mind with a single coherent purpose. We have many minds: 'multiminds'. These small minds, which the psychologist Robert Ornstein often calls, slightly jokingly, “simpletons”, all have minds and agendas of their own.