He, uh, says that he writes "with a pencil or a pen and a piece of paper". Not a typewriter. I'm not saying he's right, but I don't think he's fooling himself. I think his response at the bottom makes that clear:
> I did not say that I proposed to end forthwith all my involvement in harmful technology, for I do not know how to do that. I said merely that I want to limit such involvement, and to a certain extent I do know how to do that.