  Gravity whose nature is fundamental to the understanding of solar system,
galaxies and the structure and evolution of the Universe, is theorized by the
assumption of curved spacetime, according to Einstein`s general theory of
relativity (EGR). Particles move on curved spacetime along straight lines
(geodesics). In the last year, I proposed the mirrored version of EGR, the
flat-spacetime general relativity (FGR), in which particles move along curved
lines on flat spacetime. This puts gravitational study back to the traditional
Lagrangian formulation. In fact, all claimed accurate verification of general
relativity is the verification of FGR, because people when confronting GR to
observational data, calculate time, distance, or angle by directly using the
coordinates in Schwarzschild solution or in post Newtonian formulation. For
example, people calculate the angles by directly using the coordinate $\phi$.
However, only when spacetime is flat does there exists one coordinate system
which has direct meaning of time, distance, angle, and vice verse. This is the
famous Riemann theorem. Therefore, the more claims are made that classical
tests of general relativity fit data with great accuracy, the more falsified is
the curved-spacetime assumption. People made three such specious claims to EGR
as collected in the present paper. However, FGR predicts observationally
verified results consistently for solar system, galaxies, and the universe on
the whole. I show that the possibility of curved spacetime, black holes, and
big bang is less than one billionth. An experiment is proposed whose results
will completely decide the fate of curved spacetime assumption. with the
original article `Einstein`s Geometrization vs. Holonomic Cancellation of
Gravity via Spatial Coordinate-rescale` attached.
