"Same way I ended up here. Just... boom. Well, it may have had something to do with my detonating an experimental nuclear device at the time. Our education system wasn't so big on the sciences. I've learned what I could since falling through, but it's all theoretical." He waved a hand. "I ended up in Cardiff because I had a job there. Mostly. Plus there were people there I was watching, trying to figure this stuff out. I thought they knew how it worked. But I've never seen it in action."