I realize the phone system is an example of a system that Just Works. It's got a pretty good interface. And I know that there is a lot of high tech behind a dial tone that still sounds like it's made from cans and waxed string.
However, here's an idea for a new version of the phone system interface. Useful, perhaps, not just for itself, but to inspire other ideas.
* If two people call each other at the same time, instead of 2 busy signals, how about just connecting them?
The 'how to' part is left as an exercise.
