They've found a theorem that can subject the physical reality of the wavefunction to experimental tests. That's new, and it means this potentially won't be a m

They've found a theorem that can subject the physical reality of the wavefunction to experimental tests. That's new, and it means this potentially won't be a matter of opinion any longer. "Shakes foundations" is the title of the Nature summary, and it reflects the enthusiasm of the distinguished theoretical physicists quoted in the article.