ELI5: Explain Like I'm 5

Quabla operator

A quabla operator is a symbol that helps mathematicians do some really cool and complicated math! It looks like a weird upside-down triangle. When we use the quabla operator on something, it tells us how much something changes over time. Imagine you are playing with a toy car on a ramp. When the car goes up, the quabla operator helps us estimate how much the car's speed will change as it goes up the ramp. It's kind of like a magic crystal ball we can use to predict the future of things that change over time. It might sound confusing, but it's really just a clever tool to make math easier and faster!