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Racket can actually return multiple values rather than a product type, which is what Python does. However people don't usually use it because it's easier to just return a pair or whatever and then pattern match on it.

http://docs.racket-lang.org/reference/eval-model.html#%28par...

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Common Lisp can do the same thing, and people typically prefer returning a product type because capturing multiple return values invariably introduces some extra syntax.

Forth functions (or words, if you insist) can return multiple values as easily as they can return a single value, but the stack metaphor makes this a lot more natural. This is also true of Joy and RPL and other languages which are conceptually organized around mutating a (notional) stack. Multiple return values only become unnatural when you choose an abstraction other than the stack.

I have used RPL (I have an HP 50G) and yeah, you can do some fun stuff with the stack. Although I wish they would just port Factor to it already :P

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