<p>Annoyinggirl, you could probably learn Computer Programming or Economics on your own as easily as you can learn Art History through self-study. However, in our society a potential employer will demand to see a credential, such as a degree in a certain major from an accredited college or university, before they will even consider determining how much you actually know about something. Anything you teach yourself at a Library has no economic value no matter how much you learned and accomplished in the subject you are.</p>