The Ballad of Llewellynn

The Ballad of Llewellynn is a story of the origins of King Arthur and Merlin. That is, if Merlin was not a magician but a 21st Century college kid accidentally sent back in time to England in the period just after the decline of Rome. What the legends describe as wizardry could just as easily be explained by recreating the lessons of a modern science class. What could only be seen as magic then would be, in our world, child’s play.
When Mark Twain’s Connecticut Yankee went back in time, he was already a gunsmith, a man accustomed to making things with his hands from the bare metal, using tools that remained unchanged for hundreds of years. What if it happened today, in a world where making a thing from scratch means assembling a hundred previously manufactured components? Could a 21st century student recreate modern science when those components have not yet been invented. Could a 21st century man even survive in a world where the English he speaks will not be spoken for another thousand years.