I heard about this preprint and the reported result towards the end of July, and my reaction to this type of "discovery" is "wait-and-see". In the history of superconductivity, we have had MANY of such similar claims, and many of them amounted to nothing.
However, this one seems to have taken a life and a drama of its own. SciAm has a report on what has transpired so far.
I heard about the identical background noise in the data more than a week ago when Brian Skinner posted his ArXiv comment. The first thing that came to my mind was "Oh no, this is Hendrik Schon all over again!" Turns out, I'm not the only one based on what was written in the SciAm article.
The only way this will be determined is an independent verification. That is how science works, and this is how experimental discovery works. We simply do not accept something just because someone says so.
Zz.
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