1. Einstein once said, "A theory should be as simple as possible (but not simpler)." One of the cornerstones of relativity is that both space and time bend to keep the speed of light constant from all perspectives. Anyone who attacks this principle is doomed to be ignored. However, in the spirit of keeping a theory as simple as possible, ralfativity can explain all relativistic phenomena and solve all relativistic problems without once relying on length contraction or violating the constancy of c. Only time need bend to maintain the constancy of c in ralfativity.
2. The only stationary perspective is the one within one's own frame. When two frames are involved in relative motion, both are seen from the others perspective as moving. This does not preclude one from being depicted as stationary and the other depicted as moving. However, in ralfativity, there is no such thing as a moving or stationary perspective wrt relative velocity, only the perspectives of the participants and the moving or stationary depictions of those perspectives.
3. There are two main presents or realities in ralfativity. (The definition of reality in relativity is considered a philosophical discussion.) The first is the instantaneous present that connects all proper time clock readings within all frames. The 2nd is the delayed present due to the speed of light delay between relatively moving frames separated by distance. Ralfativity considers these as perspectives rather than realities. Another perspective that mimics the true instantaneous reality is from an an intermediate frame that has the same "half" velocity relative to the two participants. For example, at .6c, this frame would be depicted as .33c.
An example of instantaneous present is if the sun were plucked from the sky, our delayed reality would be orbiting and receiving light from nothing for 8 minutes. We almost never have any access to the instantaneous present and must post-process it to determine what it was in the past unless both participants are co-located.
4. Ralfativity defines the cause of permanent age difference from the twin paradox due to the delay of information between one frame making a velocity change and the other receiving notification. One thinks its relative velocity is different from what the other knows and this causes profound effects right down to the instantaneous reality. Relativity has another view for the cause which would take too long to describe all the rules and caveats here. Acceleration has been given magical qualities for being the cause but ralfativity does not recognize it as such.
5. Ralfativity can make predictions of when age difference occurs before relativity says its established. It can also define age difference in scenarios where the rules of relativity prohibit its establishment.
6. Ralfativity STD's always depict two participants and a common reference frame and usually an intermediate perspective that mimics the instantaneous present. Relativity also includes a common reference frame in its depictions but will deny doing so.
7. Ralfativity uses v'=Yv and a mixed perspective of Bob's space and Alice's time x/t'. Ralfativity also uses c' through moving frames to normalize the unbalanced length of depicted light signals sent to depicted moving frames. Relativity only uses v=x/t and c.
8. Ralfativity only needs to consider one depiction and that's usually relative to an earth frame with distance markers established between Bob and Alice when both at 0c relatively. Bob is depicted as stationary, Alice as moving even though both perspectives are moving. This is not a preferred frame but a chosen way of depicting the relative velocity from infinite and equivalent depictions. Relativity freaks out when this method is employed even though it uses the same method but always needlessly includes a 2nd STD with stationary and moving perspectives reversed.
9. Everything moves at the combined rate of c according to the formula c2=vx2+vt2 where vx is the velocity through space and vt is the velocity through time. Relativity also believes this but will deny it.
10. Distance separation stores time missing from time dilated clock readings. This is not explicitly and so nakedly stated in relativity.
11. Space cannot have a relative velocity to anything moving through it. Similarly, the relative velocity of anything to c is always c. Both theories agree here.
12. The frame rotation in ralfativity between Bob and Alice is a simple coordinate rotation. In relativity it's the same except the rotated frame coordinates are folded back over the x-axis of the stationary cartesian coordinates to create the rhombic Minkowski coordinates. Ralfativity cuts off the fold so the x-axis values are shared between both frames.