What is the purpose of purpose?

Answer 1
Question is its own answer, like the sound of one hand clapping.

Answer 2
The purpose for having purpose is so that goals can be achieved in a directed manner. If an object's purpose is unknown, it cannot be effectively used. For example, a computer has the purpose of being an interface device to communicate and discuss information (among many other purposes). However, someone who does not know this may use the computer as a large hammer since it is a metal object. This is neither the most efficient way to use the computer nor is it the mot efficient way to hammer a nail. Not knowing the purpose of the computer or the purpose of the nail severely hinders a person from achieving their intended goals.