Most personally convincing reasons you don't believe.

[The Reality Salesman01]

Unless, they really don't believe one of them...

Ding ding ding, what we know of human nature suggests that people who make claims to a belief set without the demonstrable patterns of action associated with that very same belief set don't -actually- hold to those beliefs which they are espousing.  That people, for example, who perceive others to be in danger act as though people are in danger.  Not as though they're the snotty kid at their local highschool debate club meeting whose said his peace.

The pen is Rrrrr....The pen is RRRRRR....