You missed that ceteris paribus part. What I'm saying is that, given two developers that are pretty much equivalent in their health, mental capacity and the ability to turn work into experience, the one that spent much more time on said work than the other will be much better at it than the other.
What is a better developer in an organization with 1000s of developers that have to collaborate in their team, cross teams etc. I am really curious in your definition of a better developer.
I didn't missed it. It doesn't work like you think it does. Making stuff is too complex to be reduced to such a simple rule. At some point additional practice won't make you better. The example of older programmers proves this.
