[radres]

I am struck by the fact the Donald Knuth bikes to work at age 85.

[gnicholas]

Perhaps one of the reasons he's lived so long is because he has healthy habits like this.

[puttycat]

Many people around the world bike at this age. It's true that most of them are not in the USA.

[quickthrower2]

Stay fit people!

[archon810]

Stay fit, people!

Or, maybe all fit people are leaving the US: Stay, fit people!

[bombcar]

It’s interesting that he goes to work at all - I assume he could get work from home anytime he wants to.

[johannes1234321]

I guess there are three things he does while working:

* Thinking About maths problems (incl. writing them down, solving) * Teaching students * Discussing problems with researchers.

The first thing he could probably do at home, but having a dedicated thinking place may help. The others are hard to do at home in the same quality for many reasons.

[lanstin]

IIRC he gets into his work arrangement to try to finish TAOCP:

https://www.youtube.com/watch?v=2BdBfsXbST8&ab_channel=LexFr...

I don't really like Lex Fridman, but this interview is excellent.