On Jun 3, 6:07 am, PD wrote:
On Jun 2, 3:22 am, saul wrote:

You just listed an aether theory that explains quite a lot: GR +
standard model.
One can call this an aether theory because it prescribes physical
quantities to empty space. That was Einstein's criteria for an aether
theory and he considered his theory of GR to be an aether theory for
this reason. The "standard model" of quantum mechanics is also an
aether theory for the same reason, describing empty space with
detailed physical quantities.

This is I suppose defensible in some abstract way as long as "medium"
is defined in an unconventional way. However, then there is no
measurable distinction between "empty space" and "medium", as there is
no evidence of empty-space-without-physical-properties.

Your ‘no measurable distinction between “empty space” and “medium”’
reflects your level of technology. Only when you know where to look
for this medium, you will find it. Otherwise, stay mystified.
shrug