Imagine on a new job you struggle to clear the bar
- in figure-things-out speed,
- in ramp-up speed,
- in independent code-reading…
- in delivery speed
- in absorbency,
- in level of focus
- in memory capacity — asking the same questions over and over.
- in dealing with ambiguity and lack of details
- in dealing with frequent changes
As a 30-something, You would feel terrified, broken, downcast, desperate .., since you are supposed to be at your prime in terms of capacity growth. You would worry about passing your peak way too early, and facing a prolonged decline … 江郎才尽.
In contrast, an older techie like me starts the race in a new team, against a lower level of expectation  and have nothing (or less) to prove, so I can
compete with less emotional baggage.
A related advantage — older techies have gone through a lot so we have some wisdom. The other side of the coin — we could fall in the trap of 刻舟求剑.
Manager and cowokers naturally have a lower expectation of older techies. Grandma’s wisdom — she always remind me that I don’t have to always benchmark myself against younger team members. In some teams, I can follow her advice.
Any example? Bill Pinsky, Paul and CSY of RTS?
 WallSt contract market