> Relying on an implicit zeroth order stack solved the problem in the same way a lobotomy solves depression.

I mean, fair and flowery, but an implicit stack has been a thing ever since proto computers/calculators. Just like a lobotomy reduces the availability of higher order processing, so too does going back to the utmost primitives in calculating a string of instructions

https://www.hpmuseum.org/rpnvers.htm