BLOWING MY STACK!

The computer keeps telling me I’m overloading my ‘stack’..?????

So I looked it up on Wikipedia:

Main article: infinite recursion
The most common cause of stack overflows is excessively deep or infinite recursion. Languages, like Scheme, which implement tail-call optimization allow infinite recursion of a specific sort — tail recursion — to occur without stack overflow. This works because tail-recursion calls do not take up additional stack space.[3]

HUH??????