The return of the function is guaranteed. It always works the same way, no matter when or where it is invoked. The return is the same on Tuesday as it was on Monday. Hence, the function is ...

‘Higher-order functions’ is a fancy term for functions that take other functions as arguments or that return functions. Very powerful!

It turns out that yes, we can, by modifying our parrot function just a little. Instead of returning the value passed in immediately, we’ll return a function that returns the value.