Before taking my comic class, I hated some of the shortcuts I saw in comics, like when they use silhouettes in foregrounds instead of just drawing the people. I always thought they looked ugly.
But when my teacher explained it was used to save time, and not necessarily for ant artistic value, it's become my favorite trick EVER.
As this guy would call it, it's "Embrace Creative laziness."
I'm always stressed about how much time I have in my life, and have taken drastic measures to get stuff done. Like, No more youtube. (i'm addicted, that's why i'm showing you one) So i'm now all for all sorts of tricks.