So, the iceberg only has a tip, right? Everything under the surface is "second order effects" and unimportant. We should have the intelligence of a 5 year old and do as we are told.
For example, the many very smart people who thought that they could use nicotine as a stimulant without getting addicted. Or the people who think that if a five year old can identify that something is bad, it must actually be good.