Right? That's what's not clear to me either. If they got readings for superconductivity and Cu2S impurities were the cause then fantastic, Cu2S is the room temperature superconductor? Just get a load of that instead then.

Or perhaps the way they measured the whole experiment was completely inane from the start if a simple conductor passes with flying colours. With that and them presenting ferromagnetism as the Messner effect makes me kind of question the competence of the entire analysis.