More details in the article. It would seem materials can "impersonate a superconductor". Might be what happened.

science.org/content/blog-post/half-levitation-not-enough

The Korean team that announced the discovery of a room-temperature superconductor has not (to my knowledge) yet published the detailed manuscript that was being spoken of earlier this year. But this new paper in the Journal of the American Chemical Society (from authors at Michigan State, Princeton, Michigan, and Columbia, titled "Impersonating a Superconductor") is a warning siren for people working with similar materials.

...

The half-levitation seen with this material (and, it has to be said, with a number of other materials) strongly resembles the LK-99 behavior reported earlier this year. But the Korean team also reported electrical resistance dropping to zero below a (quite high!) transition temperature, which is very different than what’s being seen with this barium cobalt oxide. At the same time, though, I'm not aware of anyone replicating that result using the LK-99 recipes that the original team provided, either. So the ball is still very much in their court, and the rest of the world is waiting to see if anything ever comes back over the net. Or not. Because that's always a possibility, too. . .

Wow a regular lower case A looks so f***ing weird typed out

Delete this

so what happens when you combine this & a quantum computer lol

It’s the Greek lower cases A