Years and years and years ago, my cousin Betsy and my brother both lived up in Vermont. The rest of us ventured up there every Thanksgiving for good eats, good drinks and good company. It really was the classic over-the-river-and-through-the woods holiday.

Betsy was a computer scientist working out of a lab at Dartmouth College and one fateful year she introduced me to the computer game Adventure – now known as Colossal Cave Adventure. Mind you, there was no monitor connected to her terminal, these were the days pre-PC, it was all text and imagination. But I was instantly hooked on those twisty mazes of little passages, I played and played and played all through that weekend until early Sunday morning when I blew the fuse.