The other thing one found in empty houses was gramophone motors. This was an age when the electric gramophone was coming in and you'd get electric pick-ups and amplifiers and that sort of thing, and it was a great age for do-it-yourself radio mechanics, electricians, radio frame builders. And I decided one day that I would pluck up enough courage to take the spring out of the barrel of the gramophone motor so that I could examine it more closely. And I don't know why I thought I could examine it more closely. I suspect it was just traces of destructive interference that all boys have you see. I just wanted to find out what was in it. And I got this spring out and it was enormous. It was about six feet long and two inches wide and very powerful and I didn't know how I was going to get it back, but I thought, it's got to go back. And so I hooked in the outer edge, which seemed the sensible thing to do, and then I began to wind in these coils, and after I'd got half a dozen coils in the barrel, I realised that I was running out of strength and I wasn't going to be able to hold this spring any longer, and if it took command of the situation, it could probably wreck the drawing room you see. So I had to pluck up all my courage and strength and grab this spring and switch my mind off to everything but getting that spring back in that barrel. And eventually to my enormous relief I got it in, but I would never take one out again after that.