Ask HN: How old are you (optional) and what was the last thing that you learned?

Over 50. Just read Judith Shklar's The Liberalism of Fear https://philpapers.org/archive/SHKTLO.pdf, which argues that minimizing fear is a valid political principle:

"Every adult should be able to make as many effective decisions without fear or favor about as many aspects of her or his life as is compatible with the like freedom of every other adult."

Further, "Apart from prohibiting interference with the freedom of others, liberalism does not have any particular positive doctrines about how people are to conduct their lives or what personal choices they are to make."

27. Kubernetes cronjobs

I play this game airsoft (like paintball) and I like to go especially on beautiful days like today. It's so much cardio and you don't even notice it. Anyways, this Canadian company makes these really innovative reusable bang grenades and I finally learned how to toss them just right to clear out rooms. In movies the badass hero makes perfect throws without even thinking. But turns out in real life having your gun in your main hand, pulling the thing out with your non dominant hand, pulling a pin, and then getting it throug an opening, while hoping and praying nobody gets the jump on you is really really hard. Before this I would blow myself up, or forget to pull the pin. Oops.

23 yo

Last tech thing: learned how routers work

Last non-tech thing: some strategy in technique for amateur cycling racing

I'm 34. I learned 5 new words in Hebrew via Anki this morning at 6:30am. I do this every morning as I increase my ability and go towards C1.

This doesn't include everything that I learned yesterday evening, per the requirements of the question.