From Nightbat:

...truth is verifiable frame, measurable,
observable, directly or indirectly, and
hasn't been falsified to date. Illusion is
fantasy including sci fi unless someone
manages to make the unreal, real.

Night, as the late great Johnny Cash once asked, "What is Truth?". Take
the analogy (again) of the fish in the deep ocean; he's heard this
recurring theory about something called the "ocean" which supposedly is
all-pervading, life-giving, and has enormous hydrostatic pressure. Yet
he has no sensory perception of it, and therefore concludes the "ocean"
is fantasy, nonsense, and 'nothing'. That is his Truth, his reality.
There is no 'ocean', period.
Similarly, we are sensorially 'blind' to the "ocean" of
the spatial medium, and conclude it is functionally void and 'nothing'.
That is our truth, our reality. There is 'no medium'.

Yet a simple bathroom scale gives a direct analog readout of
*something*. And the 'something', by its observable effects, appears to
be an accelerating _flow_ and the readout matter's *resistance* to this
flow. Thus it fulfills your requirement for "a verifiable frame,
measurable, observable, directly or indirectly, and hasn't been
falsified to date." What's more, this 'something' is substantial enough
to crush massive stars into BHs.

And untruth is no matter how you fudge
the results most other scientist's can see through the BS.

And 'What If', after cutting thru all the BS, gravity IS exactly what it
appears to be and behaves as????? OK Zinni now have at it. oc