[mlochbaum]

It does have : for assignment, although there's no scoping, and you have to assign to symbols that are surrounded in single quotes. You can see some examples at https://github.com/mlochbaum/ILanguage/blob/master/examples/... . They need extra parens, since : is an ordinary function and has the symbol on the left. Your overall point is right; I didn't really try to address any issues with assignment. And of course there are lots of things to try, and I hope some of them make it into some other language I design!