[SNACKeR99]

Feynman is not known as the "Great Explainer" for nothing. It occurred to me recently that one of his great gifts was in setting the stage for the learning process. He had a knack for a visceral initial presentation of the subject matter that was going to be discussed, often with analogies to the physical world we experience. This had two main effects on the listener, 1) the feeling (whether true or not) that the subject matter was somehow going to be relatable and familiar, and 2) providing a strong central mental image around which to further hang ideas as the discussion went on, rather than staying in the realm of the abstract for a long time with no grounding point.

In this sense he was a guide, saying, "Don't worry, this is a journey we can go on together, and parts of it you have traveled before". He makes you believe you can understand something (or frankly tells us when we can't), which seems the ideal mental state for difficult subject matter.