>"If you can't explain it simply, you don't understand it well enough." is my new favorite Albert Einstein quote. Yes and no. I spend a fair amount of time ex

>"If you can't explain it simply, you don't understand it well enough." is my new favorite Albert Einstein quote. Yes and no. I spend a fair amount of time explaining things to children. Not exactly five year olds, so no ELI5. More like ELI13. But to do this often requires over simplifying points to you either hand wave or or even sometimes given incorrect examples that are 'good enough' at the level that you are aiming at. For example, consider explaining gravity as mass attracting mass. That is over simplified and breaks down at certain points, but for explaining to a kid why objects fall when you drop them, and even giving an opening to explain things like acceleration of falling objects, it is good enough. So a better way of saying it is that if you understand both the subject matter and your audience well enough, you will be able to given simple explanations that will increase the audience's understanding.