Utter conviction becomes self-fulfilling prophecy
Facts however, have this ever-so-annoying property
Resistance to evidence which exposes or threatens a person's philosophy is well known to behavioural science. We do not give up our convictions easily, we fear to have them challenged. We find it very difficult to accept evidence when it is opposed to our basic beliefs. In other words: primary cognitions confronted with unassailable secondary cognitions results in cognitive dissonance.
Cognitive Dissonance is a mental state of tension which occurs when primary cognitions are confronted with indisputably contradicting secondary cognitions rendering the primary cognitions no longer maintainable. Cognitions confirming primary cognitons is 'friend', cognitions contradicting primary cognitions is 'foe'.
Since we feel compelled to nullify 'new' secondary cognitions in conflict with 'old' primary cognition, meant to somehow maintain them in order to do away with the unpleasant (mental) tension caused by the implications of the contradicting 'new' secondary cognitons, we will rationalize the 'old' primary cognitions although they can no longer be maintained rationally due to the contradicting 'new' secondary cognitions.
In order to assimilate inconsistent information to an existing worldview anyway, we will increase the number of consistent cognitions, thereby 'reducing' the dissonance. This involves rationalizing, i.e., myopic focus on facts, logic, or experience which reinforces an existing worldview, known as the Ad Hoc Rescue. In many instances however, the offending inconsistent cognitions are dismissed altogether as a result of this myopic focus on extant consistent cognitions.
This is called "rationalizing" because we seek out semi-logical conclusions using extant and newly created consistent cognitions through euphony, prevarication, and the likes in order to find a way to invalidate the inconsistent cognitions. This is, of course, intellectually dishonest when done wittingly or the result of conditioning when done unwittingly; out of conviction, believe etc., and are expressions, consciously and subconsciously, of the dogmatic refusal to face up to (the possibility of) being mistaken.
Believing 'your' opinion is right is mere confidence
Believing 'your' opinion is fact is sheer arrogance
... the essence of truth; axiomatic
People are intrinsically intelligent
When people are put together, they could become a herd
When people turn a herd, they could become sheeple
When people turn sheeple, they could become dumb animals
When people turn dumb animals, they become treated as such