Comment by sleepyguy

>What happens when those 2 engineers get sick? or retire? One guy who built half the factory is in his 50s. the line could go down with no backup.

A lifetime of working in mission critical environments taught me one thing. When people leave, nothing happens. People come and go, and everyone is replaceable, even those who believe the company will fail without them. Most departures barely make a ripple. With today's advances in technology, it's only becoming more likely that none of us will be needed down the road.