A philosophical principle I have contemplated for many, many years.

It's basis is the common complexity of everyday decision making on a contrast with major, life-changing decisions.

Most major decisions in a person's life are either a fundamentally good thing to do, whether in the interest of the decision maker or, less often, someone else; or it is the societally acceptable conclusion of what the "right" thing to do would be, being subject to widespread moral opinion, intuition, or conjecture.