I'd love to but I can't, because it was invented like in 1910 or something like that, is I told Marty, and it's kind of one of those mind things that it's really hard to really get until you actually see it work, and I said, you know, what I was going to do, and he said, "So, let me see if I can get this straight. The thing with the wheels?
Gostaria de receber, mas não posso, porque foi inventado em 1910 ou qualquer coisa do género. Eu disse ao Marty — e é uma daquelas coisas abstratas, difíceis de perceber até que  as vemos realmente a funcionar — disse-lhe o que ia fazer e ele perguntou: "Deixa-me ver se compreendi bem.