This web page is the result of a presentation I gave in Complexity Theory at Susquehanna University .
Intelligence is a hard thing to define.
The most immediate requirement of intelligence is memory. The ability to draw new information from past experience depends on the ability to store information and retrieve it later. This is the basic concept of memory. In intelligence tests, the tester will often show the person being tested a simple picture for a few seconds and then ask her to reproduce it. Calvin gives an excellent example of this in the second chapter of his book.