[hostilefork]

I think he's probably smart enough to have thought of this aspect...!

But you are of course absolutely right. And it's not a bad idea to add PWM sounds, and would be an absolutely interesting thing to see someone do for a project.

Point is it's more about a method or a way of thinking than a "practical" proposal. It's about learning how to think. If you don't like that line of thinking, you might also critique the Long Now Clock for its pointlessness. Maybe valid.

But I've used this even as a programming puzzle; to get people to write encoders and decoders for it. It's kind of more in that spirit than anything.