[splintercell]

My father-in-law who is a 58 year old software developer feels stuck at his current job because he has spent so much time on old and archaic technology that he doesn't feel confident enough to be able to go out there and get a new job in case he's laid off.

Personally speaking I spent far too much time working on a certain technology for four years and I felt trapped because getting a new job was difficult in new technologies.

There are clearly some Evergreen Technologies such as C/C++, but there are a lot of Technology switch don't land in that category and they evolved fast (js ecosystem for instance).