Another important point is that for older techies, there is a different mental mindset when it comes to making code public. Of the best S/W engineers that I kno

Another important point is that for older techies, there is a different mental mindset when it comes to making code public. Of the best S/W engineers that I know, no one has a Github account. They give talks in small groups, give lots of personal advice, some are champions of pair programming, but they don't put their code in public. It makes it harder to network and gain attention.