On today's dark matter announcement:
The most complex dark matter experiment fails to detect a single particle. How can this be? Well, because in my insignificant opinion, dark matter is a collective hallucination. Galaxies are not disks, ergo: no dark matter is necessary. I have said it before. The question of Galactic angular momentum which sparked the "need" for an invisible, ethereal, super massive is the problem. The angular momentum for Galaxies has been calculated approximating the geometry of spiral galaxies as disks. The fact is that galaxies have geometries that do not resemble disks and thus the problem does not address reality. That is all.