I've been working to develop new mastery of the Mac OS environment (mainly key commands) after using the platform almost exclusively for 37 years, and boy, do I feel dim. All this makes me wonder if I'm even capable of the deeper dive into Linux and RPi that I've been wanting to make, because I think my brain plasticity has congealed with age. Back in my youth, on my SE/30, my workflow was like a river of the tao, but these days? Yeesh.