It's funny how this monkey experiment is often trotted out as "people blindly follow the rules without knowing why," when the rule learned by the monkeys is a really good rule (it prevents a malevolent entity beyond your understanding from attacking you!), and the only reason the monkeys don't understand the "why" at the end of the experiment is because they don't have language.

The lessons I'd take away from the experiment would be 1) be sure to tell people why the rules exist, but also 2) follow the rules even if there's no apparent reason for them, otherwise you might get smacked down by some unimaginably powerful entity you're barely even aware of.