That's valid, but I was going for an ELI5 style explanation of a concept that surprised and confused me at the time. If you want to provide a better one, I'm happy to merge any pull requests.
when you aim for reddit style stuff like "ELI5", don't be surprised if HN tears you up. reddit likes things to be cool and cliquey. we like things to be correct.
also we don't have 5 year olds.