The linked paper at the bottom of the article might shed more light on this for you: “We demonstrate how apparently isolated loops could deceive observers, eve

The linked paper at the bottom of the article might shed more light on this for you: “We demonstrate how apparently isolated loops could deceive observers, even when observations from multiple viewing angles are available” I haven’t read it all yet and this topic is totally out of my wheelhouse, but it seems quite interesting. https://iopscience.iop.org/article/10.3847/1538-4357/ac3df9 https://iopscience.iop.org/article/10.3847/1538-4357/ac3df9