To get perspective on the state of physics today it is instructive to recall the beginning of modern physics marked by the special theory of relativity presented by the young Einstein in 1905 as a revolution away from the absolute space and time of Newtonian mechanics shared by all observers, into relativistic mechanics with each observer carrying his own space-time under an assumption of a common constant speed of light.
Many-Minds Relativity argues that special relativity is a formal mathematical theory without physical interpretation defined by the Lorentz transformation connecting measurements of space and time by different observers in motion, as opposed to the Galilean transformation of Newtonian mechanics.
The argument is that the Lorentz transformation has no physical realization, as pointed out by Lorentz and Born among others, while the Galilean transformation describes real physics. The fact that special relativity is a non-physical theory comes out as contradictions such as the twin paradox and the ladder paradox.
In Newtonian mechanics based on Galilean transformation different observers share a common perception of space and time (absolute space and time), but have different perceptions depending on motion (e.g. Doppler effect). Newtonian mechanics is thus relativistic as a many-minds theory on a shared basis of absolute space and time, with the possibility of using different coordinate systems connected by Galilean transformation.
- Newtonian mechanics is like a democratic society with citizens sharing common values while being allowed to have different opinions.
- Relativistic Einsteinian mechanics is like a dictatorship with citizens sharing nothing while being required to have opinions dictated by the dictator.