Interesting. Another HN post a while ago mentioned they fought any ageism by being physically fitter than those younger than them - racing the younger ones up the stairs of the building without breaking a sweat.
Actually, here's the blog post, On Getting Old(er) In Tech by Don Denoncourt: http://corgibytes.com/blog/2016/12/06/getting-old-er-in-tech...
"A year or so ago, I was attending a two-week training session with about a dozen 20- or 30-something developers. The training was on the 22nd floor and, every day after we came back from group lunches, I’d always take the stairs. The first day or two, one or two of the kids would join me, but I got no repeats. It’s pretty hard to be considered a has-been when they can’t keep up with you."
