> You really haven't thought about it hard enough if you haven't tried writing it down. Absolutely. Thinking isn't knowing. Cognitive scientists have the term

> You really haven't thought about it hard enough if you haven't tried writing it down. Absolutely. Thinking isn't knowing. Cognitive scientists have the term "illusion of explanatory depth", the experience we all have where we think we know more than we do. It's not until we try to explain something that we find our understanding is much more limited than we believed.