Isn't it interesting how different languages developed? Some more vowelized, some more consonantized, some melodic, some harsh-sounding; then there are languages such as Chinese: does that even have vowels and consonants? Lots of dependence on intonation, I understand. And, I was just thinking yesterday about the African languages that include clicking (can't think of what that's called), and how that might have developed, as in: perhaps people started using a particular group of clicks to mean, say, run; then added...uh, what to call it?--sounds that could be spelled, perhaps--for different pre-/suffixes, tenses, or something. Click-oo would mean running, click-ah would mean ran. [shrug]