Calculator as a tool

[Santi]

I totally agree with cyrille, on the advantages and disadvantages of PPL vs RPL. But as long as we are talking about calculators, I really like the RPL quick and hands-on approach. The thing changes to the other side while trying to make complex programs, as the lack of readability is a bummer, specially for the beginners. Once that you get used to stack your brain it improves...
I think Mr Vader would use a 41 opt1 anyway...