You have a problem and decide to use recursion. Now you have a problem.

You have a problem and decide to use Java. Now you have a ProblemFactory.

You have a problem and decide to use Lisp. Now you have a list of problems.

You have a problem and decide to use Python. Now you don't know what you have. Could be an int, a string, a list or a problem.

You have a problem and decide to use threads. Two now problems have you.

You have a problem and decide to use locks. Now you have

You have a problem and decide to use delegation. Now your problem is your problem's problem.

You have a problem and decide to use anagrams. Now you have lamb rope.

You have a problem and decide to dissolve it in water. Now you have a solution.