[agluszak]

What do you mean by "made-up quote"? The author didn't make it up, see https://en.wikipedia.org/wiki/A_journey_of_a_thousand_miles_...

This level of nit-picking is disheartening...

[captn3m0]

I think they meant:

> "If you can't explain it simply, you don't understand it well enough." - Albert Einstein

Which is listed at https://en.wikiquote.org/wiki/Albert_Einstein#Misattributed

[falcor84]

The reference is most likely to:

> "If you can't explain it simply, you don't understand it well enough."

Which TFA (and others) misattribute to Einstein