Those are interesting questions, from lots of points of view. Computers consist of relatively simple things interacting in relatively simple ways and, it is sometimes said, computers can only do what they are told to do.
Brains too consist of relatively simple things interacting in relatively simple ways .
And use categories . You can explore these and related questions in the following, using a Java applet to make your own observations. There are five pages following this one, as shown in the list below. Each is linked at the end to the next, or you can go directly to any page, by clicking that page in the list. If you've worked through the exhibit, and just want to play more with the applet, you can click here .