[bartvk]

I used `bc` for years and years

[sorbits]

On the Commodore 64 the OS was a REPL and ? was shorthand for PRINT, therefore you could type `? 2+2` and you would get the result printed.

This felt so intuitive to me that ever since, I’ve ensured my machines had ? do calculations in the shell (by aliasing it to whatever could do math).