[zabzonk]

> So if someone is 60+ year old, chances are that most of his work has never been open source

Somewhat ageist? I'm 72 and have produced a number of FOSS tools.

[sebmellen]

Truly. I know plenty of people in their 60s and 70s who use Git and are still very sharp programmers.

[kragen]

Using Git is unrelated to whether the software you write is proprietary or open-source.