It's strange - I have the same attitude to new ideas now at 42 (with a wife and young child) that I did in my early 20s. If anything, I'm more open now to tran

It's strange - I have the same attitude to new ideas now at 42 (with a wife and young child) that I did in my early 20s. If anything, I'm more open now to transformative ideas then I was then. I've started a startup :) I think maybe the "advantage" I have now is a career in another field, so that the programming world is to me now as it would be to someone in their early 20s. As far as the stamina argument, as a building architect, I have evolved a large ability for extreme focus and no sleep. Multiple all-nighters are not uncommon on project designs that inspire me, but in terms of sheer productivity, I think all-nighters are not a good plan unless you are riding a wave of energy and creativity, in which case to stop would be foolish. On the LISP argument... I'm having alot of fun programming with it, and it's doing everything we could possibly want, so I don't see a need to change except for the herd instinct argument. And whats really nice, the further we evolve our application (now well over 26K lines), the easier it is to change the app and add features. :)