One of my favorite throwaway movie quotes -- from Annabelle (2013).
> Dad: Hey. You know what, you shouldn't even be watching that stuff. All right? It could upset the baby. There's new research out there...
> Mom: Oh, boy, more new research?
> Dad: It's true. They are learning that babies in utero... experience more of the outside world than they ever thought possible. They recognize voices and noises, songs.
> Mom: You know, I bet the men that did that research spent millions of dollars... when they could have just asked the mother for free.
Basically every parent knows this. The difference between happiness and madness is having several babysitters on standby.