"one part in 10^24, which is kind of like taking two human beings, counting the number of electrons in them, and finding that they’re identical to within one el

"one part in 10^24, which is kind of like taking two human beings, counting the number of electrons in them, and finding that they’re identical to within one electron" I hate to be pedantic... wait, I LOVE to be pedantic. If you consider a human being to be a 50kg bag of water, that's 2750 moles of water, or ~1.7 * 10^27 molecules. Each molecule has ten electrons, so this factoid is off by about four orders of magnitude. More if the person had a big bowl of electrons for breakfast that day.