[UIZealot]

> "Do your homework" doesn't imply a loop either.

But "for these subjects, do your home work" does.

> Nor does "This could take a while"

I never claimed that "while" alone is any better.

> It should not be a shock that the english language doesn't naturally have a single word that can express both a condition/duration as well as a command without any other helper words.

I never asked for a magic word. To the contrary, I was lamenting the lost of the helper word "do", making the "for" alone nonsensical.

> Do is superfluous. Everything in an imperative program is a request to do something.

I disagree. I think "for...do" makes things much clearer than "for" alone.