The Free and Open Source Software movements are reinventing "software engineering" as a liberal art. This paradigm shift portends social and cultural changes that we are only beginning to imagine. There are many parallels to Europe at the end of the ninth century, and the emergence over the centuries of the idea of the liberal arts. There are also some differences. Perhaps by looking back far enough, we can learn from the past and imagine the impact that open source will have a thousand years from now -- a world in which reading and writing software is as commonplace as reading and writing books -- and the changes we need to make now to make that future a reality.