The brain is encased in the head, the part of the body which in most walking, flying or swimming animals is the leading end of the moving body (with … - Valentino Braitenberg

We will talk only about machines with very simple internal structures, too simple in fact to be interesting from the point of view of mechanical or electrical engineering. Interest arises, rather, when we look at these machines or vehicles as if they were animals, in a natural environment. We will be tempted, then, to use psychological language in describing their behavior. And yet we know very well that there is nothing in these vehicles that we have not put there ourselves.

We must be careful, however, not to let the process of acquiring new ideas interfere with the detailed knowledge that our vehicle has assiduously collected and carefully stored in many associative connections during its lifetime. We know that this may happen in humans who are overly dedicated to the development of ideas. They tend to connect many individual cases into general categories ad then use the categories as if they were things, losing the potential for categorizing in other ways by remembering each instance.

This is an exercise in fictional science, or science fiction, if you like that better. Not for amusement: science fiction in the service of science. Or just science, if you agree that fiction is a part of it, always was, and always will be as long as our brains are only miniscule fragments of the universe, much too small to hold all the facts of the world but not too idle to speculate about them.