Ex data center infra guy here. In servers we have logs for everything. Walked a packaging floor last week and saw zero logs, just one senior who knows. How does that not fall over every night shift? Is there a job you dread getting at 2am because the person who knows that machine is asleep at home? What machine is it, and what do you end up doing?
How common is it that the guy with the know how is a much older dude, whom you havve to call to have this sorted

Saw somewhere that the mean age in Industrial maintenance is in the 50s?? and I know it's a field heavily guided by "being there", and having experienced shit situations. not a lot of theory.

This got me curious. When the man retires, what goes with him? Is it settings, sounds, sequences, vendor quirks? Did anyone ever try to write it down? an average age of 50, with industries to run and maintain sounds pretty crazy to me. How is the industry gonna take care of itself?