She wanted a RPN calculator as "she could not get her head around using an algebraic calculator."

That is something us RPN guys can relate to.

That reminded me of an incident MANY years ago, when a manager was "insulted" when one of his staff mentioned "Reverse Polish Notation," when talking about his HP calculator.

So I got curious about RPN, and its name.

It turns out there are both Polish Notation (PN) and Reverse Polish Notation (RPN).

The description "Polish" refers to the nationality of logician Jan Łukasiewicz, who invented Polish notation in 1924.

So rather than being insulting, it has a historical basis.

And easier than "Łukasiewicz Notation," or "Reverse Łukasiewicz Notation."

And I still use my old HP-22 calculator, from my F2 days.

Are any of you RPN guys?