Blown over — smart dust or where is it?

In all the news about IoT, where has the (admittedly far-flung) prediction about ‘smart dust’ gone ..? Where has the smart dust gone? Was it a wormhole glimpse into the future, was it some runaway brainstorm on steroids (or other stimulative substance) session’s result ..?
Where still, it looms in the background. Once information is created, will it remain in the universe, existing without a result (as it may or may not have a cause, the rebel against entropy that it is)? (Here I go in similar vein, not stimulated!)

Now, let’s first have actual working quantum computers. Similarly vague at inception and counter-intuitive — for which reason I believe it will turn out to have logical fallacies in its current models so will in the end not be feasible to realise ..! —, let that come first. In itself, already difficult enough to cope with, as a global society.

Afterwards, smart dust will look like a rough cut piece of cake, probably. But maybe the Problems of it, will stil be Hard (compute-complexity-wise), as here and elsewhere.

And this, for your blue pill:

[Excellent or mundane archi; but with sublime acoustics — second (to) one in Amsterdam!]