A Poem About Recursion

To understand recursion,
You must first understand recursion.

The base case is a quiet room,
Where nothing calls and nothing blooms,
A simple truth, returned and done,
The anchor where the stack's unwound.

But oh, the calls that came before,
Each one a frame upon the floor,
Holding state and holding place,
Waiting for the answer's grace.

And when the deepest call returns,
Each parent frame in sequence learns
The value that it waited for,
Then pops itself and waits no more.

So if you find yourself confused,
With stack frames piled and patience bruised,
Remember: every winding stair
Eventually leads back to air.
