I have never heard the quote with the middle section you included "to a laymen in a few paragraphs" I have frequently heard the quote without that section, tha

I have never heard the quote with the middle section you included "to a laymen in a few paragraphs" I have frequently heard the quote without that section, that section seems flawed in that a layman would need to have all the underlying concepts explained to them also, indicating that application of the quote would not scale, as more underlying concepts were necessary to include.