In article ,
Fitch R. Williams wrote:

"Robert Swinney" wrote:

So, the ordinary mortal is in for a ton
of confusion if he tries to figure out RPN.

You just gotta be kidding. I've never met anybody I couldn't explain
RPN to in a matter of a few seconds. After that, its just a matter of a
few minutes practice.

Fitch

Bet I've taught 30 or 40 over the years as well. Don't recall ANY of
mine that didn't like it... or any having much trouble learning.

Erik