No. If you really understand what you’re doing, which after 10 years you should, picking up a new framework or library is quick. You might not be writing the mo

No. If you really understand what you’re doing, which after 10 years you should, picking up a new framework or library is quick. You might not be writing the most idiomatic code after 3 days, but you’ll do fine. If however you have 1 year of experience 10 times, then yes it’s an almost insurmountable challenge.