To understand recursion, you must first believe you can understand recursion!

In order to have the concept of recursion accurately displayed, please click here.

Laws of Computer Programming

Any given program, when running, is obsolete.
Any given program costs more and takes longer.
If a program is useful, it will have to be changed.
If a program is useless, it will have to be documented.
Any program will expand to fill available memory.
The value of a program is proportional to the weight of its output.
Program complexity grows until it exceeds the capabilities of the programmer who must maintain it.
Any non-trivial program contains at least one bug.
Undetectable errors are infinite in variety, in contrast to detectable errors, which by definition are limited.
Adding manpower to a late software project makes it later.
Lubarsky's Law of Cybernetic Entomology: There's always one more bug.