Let’s break our problem down into the features we need in our decision model and the features we don’t want.
We want more variety than “the best” answer.
We don’t want to include “the worst” answer.
We do want to include “reasonable” answers.
We don’t want to include “unreasonable” answers.
In the above criteria for what we do and don’t want, we were coming at the problem from both ends. We want more than just the best choice. We acknowledged that there are other choices that might be acceptable. On the other hand, we certainly don’t want the worst choice, and there are likely a lot of choices that aren’t the worst but are pretty darn bad as well. We want to avoid those. But how do we separate the good from the bad? ...