It was a joke: when Seymour was informed that Apple was using a Cray machine to design their computers he said something like "funny, I use an Apple computer to

It was a joke: when Seymour was informed that Apple was using a Cray machine to design their computers he said something like "funny, I use an Apple computer to design the Cray". But in reality he never used computers at all but did everything with paper and pencil.