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Seriously, RPN was freshman year stuff for me. Did all the schools somehow ditch the classic "write a calculator" assignment?

I recall learning prefix before I learned RPN. Then again, our teaching language was scheme. Writing an RPN calculator was one of the first homework assignments, though.

Not everyone at 37signals is a programmer.

Neither is every geek, but fair point.

It's a good introduction to stack-based programming and yeah, it's normally brought out early in CS classes (or used to be).

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