 If you're going to do it, you have to find out everything you possibly can to make it safe. And at least that was the American attitude prior to the first Alan Shepard flight. You can't guess. You shouldn't guess on someone's life. You try not to, at least. And so that's one of the reasons these experiments were done. Some of the monkeys we set up died, too. Yes, absolutely. The goal here is to make it safe for human beings.