> As a ~20 year old this feels so weird to read. I'm still considered young in ~10 years?

One of these days, maybe as early as your mid-/late-40s, you will be consulting with your a medical doctor and realize that you are the oldest person in the room.

> As a ~20 year old this feels so weird to read. I'm still considered young in ~10 years?

An anecdote for you...

In Summer 1997 i was 24 at a family reunion, listening to my grandmother and several other seniors talk about some recent interaction my grandmother had had with a delivery person. One of her friends asked her, "how old was he?"

i'll never forget either her response or my jaw-dropping which followed:

"Oh, he was a _young_ man. About 50, I guess."

(Yes, she actually stressed the word _young_.)

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.

It's all relative. When I was 20, I'd consider myself old at 36. Now when I am 36, my definition of old has shifted and it's now somewhere past 50. I guess "old" for a person is just that person 10+ years older :)

> As a ~20 year old this feels so weird to read. I'm still considered young in ~10 years?

You'll still feel young too! It's really weird when you get to your mid 30's and realise that all the 20-somethings view you as old

Consider that careers run from 20 to 70 or so.

You'll always be young according to yourself.

Yes

Young is relative. To an 80 year old someone who is 40 is young. To an 8 year old someone who is 20 is old.