The problem is that no one has a pure sample of LK-99, only chunks of rock containing small areas of LK-99. So even if LK-99 is a true RT superconductor, we're

The problem is that no one has a pure sample of LK-99, only chunks of rock containing small areas of LK-99. So even if LK-99 is a true RT superconductor, we're only going to see levitation on the side of the chunk that has a high enough concentration of it. It's like trying to evaluate a diamond by poking at a rock that might or might not have any diamonds buried inside. It must be really frustrating. So yeah, I hope there's a better way to evaluate this substance than "it floats!"