For the older employees, I actually saw a picture of a table showing age versus years experience and where the sweet spot is considered to be.
I walked into a war room and someone had left it on the board, I took a quick picture of it just in case.
This particular area was being used for a moving of a site within Aero and they were going to RIF a certain %. I believe they were using this excersize to determine who stayed and who was cut.
May come in handy one day.