I don't think it was taught that way in chem or bio, but I tried to understand it that way... My parents have always bought me science books, and I had already read most of my high school library's science section, so most of what I was learning wasn't new. The concepts I was learning didn't necessarily let me predict the other concepts, but they all fit together in a logical, meshed framework where they relied on each other, and I could use that to trigger my memory to retrieve particular concepts. Which is much harder in something like "nursing theory", which a) I didn't spend most of my childhood reading books about, and b) doesn't hold together in a logical framework, except in some superficial ways.