Relativity Survey

The theory of relativity is many theories of relativities -
   when applied to testing nature.
The following statements can be and are - answered either Yes or No by relativity promoters. Just from this sample there are over 64 million(64,000,000) possible relativity theories, whose contradictions are ignored because "relativities give the right answer to experiments".
Yes, they do - inconsistent logical systems can prove anything is true! The value of these different positions to relativities theorists is that a set of yes/no answers can be selected to match any empirical test.  
A win-win situation. 

Relativists - answer these statements - take a stand!
1. All motion is relative and light motion is absolute
2. The traveling twins prediction is that each one is younger - or  older - than the other.
3. There is no aether.
4. SR applies to rotation.
5. SR applies to acceleration.
6. The cosmological constant must be added to the GR field equations.
7. An inertial reference frame is a system of space and time coordinates in constant motion in a straight line
8. No inertial reference frames exist in nature.
9. An inertial reference frame is a system in which the laws of physics hold true.
10. For any material body in any state of motion there exists an inertial reference frame in which that body is instantaneously at rest.
11. Length contraction and time dilation are real physical effects,
not apparent or just appearances. 
12. Length contraction and time dilation are testable.  
13. The twin paradox is a contradiction.
14. The twin paradox is explained by asymmetry -
the acceleration of one twin and not the other. 
15. Light speed measurement = distance traveled by a light beam divided by the time to travel that distance.
16. Changing inertial frames is the same as an acceleration.
17. All systems of reference are equivalent with respect to the formulation of the fundamental laws of physics.
18. No experiment can distinguish the acceleration due to gravity from the inertial acceleration due to a change of velocity.
19. Relativity does not apply to the Sagnac experiment.
20. The Sagnac experiment supports special relativity only.
21. The Sagnac experiment supports general relativity only.
22. The Sagnac experiment supports both special and general relativity.
23. Clocks separated in space cannot be synchronized.
24. Mach's principle agrees with SR.
25. Mach's principle agrees with GR.
26. SR is proven by the mass and energy transformations observed in atomic accelerators.

Oh, what a tangled web we weave,
when Albert Einstein we still believe.