It's a good idea in general for small values of x:

  x years experience doesn't mean much if it's the same year x times

Probably true for x < 3 and often true for x < 7.

On the other hand, a person still using the same coding skills they had in 1981 probably writes damn tight efficient code...or is a God of COBOL .

I'm going to use this quote in the future because it's so true.

Hope you don't mind the attribution "a wise man once said [...]"

I stole it from someone else.

maybe "a stupid thief once said [...]"