Sorry, I didn't mean to dis my dad there. He explained it as soon as he thought I would be able to understand it. What I meant by "well enough" is that the ex

Sorry, I didn't mean to dis my dad there. He explained it as soon as he thought I would be able to understand it. What I meant by "well enough" is that the explanation that he gave -- or even the one that I now have in my head -- is nowhere near the truth. Engines are complicated, and I will never truly understand them. But at least they can be demystified.