I think not, Giok. Some things are entirely opinion. In such affairs there is no way of proof and the index of strength is the quantity of agreement. The guy who musters the least agreement is the one who ends up in the asylum.

But in many other areas there are facts and measurable consequences. Hygeine is a simple example of a cultural practice that we often try to change. What makes "us right" is that the incidence of disease goes down afterwrads.

A