“When am I going to need to know this outside of the classroom?” said pretty much every math student ever.
“You’re not going to bring a calculator with you everywhere you go, are you?” was how teachers used to respond.
Oh, how times have changed. Today we of course always have a calculator on us wherever we go. And while that doesn’t mean students don’t have to take math any more (how do teachers answer that question nowadays?), it does mean there is a new, better way of helping people learn.