Just the way it is

In my anthropology class, it seems we are trying to understand people and the way they interact with one another. It's almost as though we are trying to predict the way that they will function based on the way they have acted in the past. This idea seems practical in the sense that it will teach us what types of interactions work and both how and why they have worked. But, I don't think we can always understand the reasoning behind something. The rationale people use is often irrational. There may not be a scientific reasoning behind it nor a spiritual reasoning. Things may be done by nature or by impulse. People can choose to believe that things happen innately or socially, but they cannot prove this. Even if the subject admits to doing one, there is no way to truthfully know that the subject is being sincere. They may have no reason to lie, but the very fact that we can't know if they are telling the truth prevents any conclusion from accepting their statement.