The general proposition is that the resources that will be utilized are the ones that contribute most to the overall efficiency of the production system. The third parameter has to do with our commercial world, our search for profits.
But for everyone, I think, there is always a pressure to conform, and I guess as you get older you realize it's less interesting to do that. It starts with you, though, saying, 'I know what I like doing and that's what I'm going to do.'

