Welcome to the never-ending abyss of recursive functions! Here's a list of factors that will drive you to the edge of madness:
A factor that's always on the edge of understanding, never quite grasping the underlying principles.
A factor that's all about the infinite complexity of fractals.
A factor that's all about the thrill of the unknown, and the terror of the unknowable.
A factor that's all about the endless, boundless, and bottomless depths of mathematical understanding.
A factor that's all about the sheer, unadulterated, and unadulterable madness of mathematical functions.
Warning: Prolonged exposure to these factors may lead to Mathematical Madness.
Or not.
Or possibly both.
Maybe.