@nosrednayduj@hachyderm.io @simon_brooke@mastodon.scot @sigue@universeodon.com @Ardubal@mastodon.xyz @vnikolov@ieji.de @screwlisp@gamerplus.org They do date back to Maclisp, as does the grammar complaint. Blame Quux[1] (Guy Steele), I suspect. There is also a third that happens when you assign another 'pure' (what we call readonly now) quantity. I was afraid I would not remember correctly (though, oddly, I did), so I looked it up in "COMMON;LINS >" on an ITS emulator: VERITAS AETERNA -- DON'T SETQ T. PURITAS NECESSE EST -- DON'T DO RANDOM BINDINGS. NIHIL EX NIHIL -- DON'T SETQ NIL. [1] https://speechcode.com/jargon/jargon.info.Quux.html