Those guys really took the "Universal" in "Universal Serial Bus" to heart. Let's multiplex every conceivable connection device known to man into one giant standard, and throw in the ability to power the devices, too. That should really make things simple.

I seem to recall that there was some proverb about systems becoming so baroque that they eventually become rubble.

It seems that USB is sewing the seeds of its own destruction. No doubt that within 20 years they'll decide the whole thing is so complex that they need to replace it with something simpler.

And I'm still puzzled as to why plugging a keyboard into a keyboard port was considered such an inconvenience in the first place.

I think that USB is an object lesson in why you can't reduce inherent complexity, only shuffle it around.