Is there an advantage to using polish notation in terms of human readability? Lately I've been reading a lot of questions and answers related to logic and I have found some of them in the style of this one. As I'm not a fan of using Polish notation,  I honestly just skip them. But, now that I think about it I guess there should be a reason for doing it that way.
What I'm asking you guys about is not just what you think, but also of course according to your experience, and if you have something to support your opinion or references. If you ask me I would say the notation is awful, messy, difficult for humans to interpret, and of course non-standard, but it's just my personal opinion and I have nothing to support it other than my very short experience in the area. 
 A: From 1990 to 2003, HP produced a series of calculators, the HP 48 series, using Reverse Polish Notation (RPN).
Since this series has been quite popular, many (human) users had to adapt themselves to RPN. It was not exactly easy, but with some training, you could get used to it. Writing formulas in RPN usually asked for less symbols than with a traditional notation.
The programming language Lisp makes use of the Polish prefix notation. Again, programming in Lisp requires some practice (and not being allergic to parentheses). The choice of the Polish notation was motivated by the fact that it is easy to parse into syntax trees.
I wonder whether Human readibility do not mainly depend on education and training. After all, English is written from left to right, but Arabic and Hebrew go from right to left and boustrophedon can be found in ancient manuscripts.
A: It's more algorithm- and machine-friendly than human-friendly. Polish notation, especially reverse Polish notation (the less human-friendly of the two forms) is easy to parse.
