Human intelligence involves both ``mundane'' and ``expert'' reasoning. By mundane reasoning I mean all those things which (nearly) all of us can routinely do (to various abilities) in order to act and interact in the world. This will include:
By expert reasoning I mean things that only some people are good at, and which require extensive training. It can be especially useful to automate these tasks, as there may be a shortage of human experts. Expert reasoning includes:
Expert Systems are concerned with the automation of these sorts of tasks.
AI research is concerned with automating both these kinds of reasoning. It turns out, however, that it is the mundane tasks that are by far the hardest to automate.