I once knew a build-master on an IT project. He was a lot like a bartender: a quiet, older gent whose role was removed from the day-to-day chaos of the project. He didn't say much, but when he did, it was good stuff.
One day, he and I were talking about two senior developers on the team. Both had 30+ years of experience in comp sci, and yet one had a stellar reputation and strong output while the other, er, did not (high diplomacy here).
At one point in the conversation, the build-master looked me square in the eye and said, in his sage tone:
There is a difference between having 30 years of software experience and merely being in the industry for 30 years.
Indeed. Put another way, there is a difference between being active and being passive: may we all stay active and hone our skills...