Using it. Those magnets depends on superconducting, which is only possible at low, really low temperatures (often close to absolute zero at 0K). Also the energy that generates the magnetic field also generates a lot of heat. So we cool those magnets with liquid nitrogen.

Also the problem isn't the liquid nitrogen but rather the liquid helium that is needed to reach the really low temperature ranges. Because helium is more scarce and expensive.

More torque per weight of motor, or more power generated per torque applied to it.

Much higher efficiency these take little power relatively.

While a lot of the time the applications of a technology precede it's discovery, it's certainly not ultra rare for the discovery to prompt the applications, because nobody ever gave much thought to 'what can we do with X'.

The difference is, we already use magnets everywhere.

Unfortunately, Boeing 777s are made of aluminum. Non-ferrous.

Well we already can do directional sound, perhaps we can find a way to do focused directional magnetic fields, and then lift things into space without using cables? Obviously, I know it's entirely different mechanisms. Even using this to make electric motors way more powerful or something could be an application.

Off subject but they found dangling a long cable into the atmosphere from low orbit or whatever they could generate a lot of electricity, the cable broke off after a while though when they tried it.

I dunno. I'm just an overly tired & poorly educated idiot who's watched too much sci-fi. I really should be asleep, but my natural inclination has always been to fight it until I inevitably lose (sometimes the battles are incredibly intense and drawn out). I know one day it'll be different, tho - one day I won't wake up and be forced to admit defeat.

See I started with inverse cube and then edited it because I'm a coward