Quite happy to see entropic gravity discussed here. One thing I really like about EG is that it ought to be very testable. For example, there are a few observa

Quite happy to see entropic gravity discussed here. One thing I really like about EG is that it ought to be very testable. For example, there are a few observations of very diffuse galaxies that exhibit very little if any dark matter behavoir. These represent a direct challenge to EG, as gravity ought to emerge from any concentration of mass, whereas under DM we can say there simply aren't any DM particles there (of course why this is the case is still very important). Similarly, with EG there should be testable pedictions at smaller scales. Microscopically under EG, there should be no gravity ever between fundamental particles, no matter how massive, for the same reason that a single atom cannot be warm.