[johnisgood]

I do love Go for that. Python less so, lots of syntactic sugar, less immediately understandable than Go, IMO, just the list comprehension is less understandable, i.e. I would rather have a for loop when I am reading a reference implementation.

As for Factor, of course, it is a concatenative language. You not only have to learn it, your brain probably has to work in a certain way. Common Lisp vs. Forth vs. Haskell vs. C. They are all at the different end of a spectrum I would say.