Einstein said it first: If you can't explain it to a six year old, you don't understand it yourself. https://www.goodreads.com/quotes/19421-if-you-can-t-expla

Einstein said it first: If you can't explain it to a six year old, you don't understand it yourself. https://www.goodreads.com/quotes/19421-if-you-can-t-explain-it-to-a-six-year-old https://www.goodreads.com/quotes/19421-if-you-can-t-explain-...