People tend to fill in the gap of their ignorance with a mystical entity: sometimes God, sometimes conspiracy, sometimes vague complexity. This is "the mysticism of the gap". One subtle version of this is "balance" or "the middle way". When two theories both seem wrong, people claim the truth lies somewhere in between. There is no logical reason why a combination of two false theories should be a true theory. If theory X says the moon is made of cheese and theory Y says it is made of steel, the balanced theory of "half-cheese and half-steel" has no reason to be correct.
Take regulations. One theory says too much stifles innovation, another that too little creates chaos. The balanced theory says find the middle. The same pattern appears in learning: memorize facts or focus on understanding, balance the two. And in child-rearing we have: strict rules or total freedom (in the sense of negligence), find the balance.
It is possible that one of the balanced theories is right. But 'X and Y are both wrong, therefore the balance is correct' is not a valid argument. The honest thing is to admit that we don't know of a good theory. Then we should start looking for a third theory that solves our problems with the current theories.
That is the main problem with the mysticism of the gap. It stops us from looking for the third option.