Some Of The Brains Default Positions - III) Not Rational

Being rational conveys an image of greater deliberation, more calculation, more effort and less warmth; it assumes a person's beliefs and preferences are reasonable.

Another way of looking at rationality is being internally consistent rather than reasonable.

This is favoured by non-psychologists, especially economists.

Humans are not irrational but we need help to make more accurate judgements and better decisions, ie
"...we are emotional beings attempting to become rational, not rational beings managing emotions..."
Rande Howell as quoted by Jonathan Shapiro, 215