 around the world, spending years on very small ships, sailing ships, very small sailing ships. These ships were not much bigger than sometimes lifeboats that you see on the cruise liners. And they crossed the world, and they did whaling from years on end. And you know what? They didn't have psychological problems. They managed to get it all done. So it's nice that they did this, but I think it's mostly NASA trying to find some way to justify its existence.