> So to see if I understand you: you agree that a superior A.I. could
> understand us but you claim that we would not be understand the A.I..

No. They might not have the necessary reference points to understand us
either. Math and technology aren't everything.

> If we can teach calculus to children by dumming it down until they
> reach a point where they can understand it, wouldn't it be reasonable
> to believe that an alien civilisation could teach us its own
> technology too?

No.

> They could start by explaining how to go one step beyond our own
> current technology.

You still aren't getting it.