Because of the way the brain works, one cannot evaluate (Fi, Fe) and think logically (Ti, Te), or abstract (Ne, Ni) and concrete (Se, Si) at the same time. In another words people’s information metabolism is bipolar. A person’s irrational ego is the opposite of their rational ego. This is the reason why individual authority is seemingly projected in different ways. This implies self-development differs from one to another in fundamental ways. Since people lack honesty, they do not develop rational principles and therefore do not develop the ability to metabolize information efficiently, especially in the area that gets less attention, the irrational ego. This is where rational principles are of big help to one’s existence, and thus with enough effort (bio-chemical energy + focus) one can develop each facet to one’s relationship with reality.