[adwf]

Yep, a lot of people are confusing the impossible of eg. "We can never go to the moon", which was actually just an exaggerated infeasible - it was possible, but only at great expense - with the literally physically impossible.

The moonshot wasn't about the laws of physics, it was about the laws of economics. A scale-up problem in terms of money. Whereas this charger is about trying to evade some very difficult laws of physics.

Even if you exclude the extreme physical improbability of the device, it still has massive problems in terms of practicality. It would require installing a large number of expensive ultrasound emitters in every coffee shop and fast food joint. Then installing recievers in every phone. And it will still be massively inefficient power-wise. Whereas the alternative is to install comparatively low power, more efficient wireless charging pads in every table.

So even ignoring the physics, this was going to be an incredibly hard sell.