Thank you for a civil, intelligent conversation.

I had never thought about the "asymmetry" of putting control codes with the character codes in ASCII--it does seem illogical now that you point it out. :) Languages like Ido aren't completely "artificial", and I certainly think Couturat didn't fail in some sense--my irrational issue with Ido, despite its numerous strengths, is that words with the same part of speech end in the same letter(s), making it monotonous. But as my wife pointed out, that regularity makes it easier for computers to parse.