My kid was curious about my HP-35 and I taught them how it works. They got it in no time and I made it an exercise to rewrite math expressions in RPN.

Not sure they are that interested in programming, but FORTH is a little sweet language.

My first experience with it was Paul Lutus’ GraFORTH. On the Apple II it was ridiculously fast.

Well that’s next weekend sorted, thanks!

lutus also created arachnophilia and sailed or is sailing around the world.

n coined the term careware. iirc.

first-hand info. i had downloaded n used arachnophilia.

he is on hn.