I think first we should understand, and analyze, the expectations of reality presented to us from birth. The education system and the source of method of thinking used by parents.

Examine the expectation of written language and the rules placed on it, inorder to give a sence of pride, and also alienating other humans with different systems of symbols for declaring thought.

Examine the ideas of ethos, in every culture, and determine if it is logical in reason. Does the ego present knowledge through scientific observation, or persuasion from opinion?
Then we must realize that nothing is in essence "fact" as everything evolves and changes.

Where does this change come from, where does this individual perception of reality begin to manifest and change the reality of others.

The very core understandings of existence are possible faulty, building "progress" upon an incorrect foundation of propogation.