[cpressey]

If that theory was correct, one might expect Forth to be really popular among Japanese speakers. I don't see a lot of evidence for that.

I tend to think it's a more general effect where humans actually want a certain amount of irregularity in their languages/notations, to act as markers or error-detecting codes of some sort. e.g. "he", but "him" in accusative case. But who knows; English gets by with "you" being both singular and plural...