On the other hand, those who came from physics and thought that they would find a new physics in biology just got lost in the metaphysical jungle, for the simple reason that, you know, biology is very low energy physics – that it's got… of course it's consistent with the laws of physics, otherwise if we weren't we wouldn't be here, and it's just chemistry… part of chemistry in a very particular mode. So I think many of the earlier discussions of the physicists were irrelevant. And I also think that what is another thing that's remarkable is you can't prepare yourself, as I mistakenly believed as a young person, equip yourself with a theoretical apparatus for the future. You know, so you learn group theories saying… could be important, or lattice algebra, and go around looking for such other tools, because I think it's good to know what there is. But I don't think you can, so to speak, equip yourself, because I think things take you from the back basically and surprise you. And someone once told me, 'What mathematics do I need to'… asked me, 'What mathematics do I need to do biology?' I said, 'The ability to count up to 20, that's all. You don't need much more from that. It's 20 amino acids, four bases, you might have to go to 64 at some stage, but you don't need much more than that.' So I think that that's another interesting thing where we are mistaken in how we prepare ourselves, you know, for our heroic voyages of the future. The best thing to do a heroic voyage is just start. Don't… don't equip yourself.