It was intended to be a small point. The psychology and effectiveness of decision-making strategies could fill up books (and they have).

The scenario I had in mind is one where you have some limited set of options, a consensus is necessary, and the overhead of measuring the effectiveness of the alternatives isn't too high.

In those situations you're going to argue until someone gives in, someone higher up tells you to knock it off and makes a decision for you, or you decide to see which alternative actually does best.