Let's start with Maslow's Hierarchy, shall we? While I wouldn't say it's "settled science", it's a fairly well-studied area, and we don't have to just throw up

Let's start with Maslow's Hierarchy, shall we? While I wouldn't say it's "settled science", it's a fairly well-studied area, and we don't have to just throw up our hands and say it's either bare-bones survival or anything anyone could possibly ask for.