I could run a marathon if I put in the effort. The reason I "can't" is truthfully that I can't be arsed Well, so could any human being. I've run a bunch of Mar

I could run a marathon if I put in the effort. The reason I "can't" is truthfully that I can't be arsed Well, so could any human being. I've run a bunch of Marathons, and I've personally seen people with no legs complete them. The only significant difference between those who have completed a Marathon and those who haven't is who could be arsed to do it. But I don't think that extrapolates to any human endeavour. Highly motivated people can work their entire lives and something, and still fail.