My daughter asked why I always turn the oven light on but never actually look inside

"Dad, why do you always flip the oven light on when the timer goes off, but then you just stand there?"

I told her it's called ambient monitoring.

Punchline

I'm not checking if it's done — I'm giving it the opportunity to be done. The light is moral support. If the casserole wanted my input, it would've asked for a thermometer.