What is something you just discovered on Sims gameplay, that you didn't notice before?

I legit just realized that fast forwarding time, does more harm than good. For work and sleep, it seems to be fine. But, when I am learning a skill and fast forwarding time, I somehow skill up much slower than I would if I was playing at normal speed. Same with having to attend university or an event, speeding time up ALWAYS makes me late.

Lemme hear the discoveries you made, and see how ignorant I am lol.