I’m nearly 64.
Back when I was a teenager, people in their 20s were “old farts.”
Nowadays, I look at people in their 40s, as “kids.”
Here’s my first ever engineering project (1987): https://littlegreenviper.com/wp-content/uploads/2022/07/TF30...
I was 25, at the time, and a fairly newly-minted EE.
Brother in arms ;)
I just turned 65. Own 1 person custom software development company and am very much active professionally. Started programming in the 80s while working as a research scientist.