>>13629422Don't fully understand it myself but with relativity synchronized clocks don't stay synchronized if they're moving or accelerating, and if light moves at different speeds in different directions then clocks run fast or slow by direction too. When you say B should receive/miss A's signal you're assuming their clocks are synchronized.
I'll add my solutions. Why are these wrong?
1. Black hole event horizons would be weirdly shaped, a bulge on the slow light side, contracted and maybe light escaping on the fast side.
2. The universe would look bright and less redshifted in one direction, dim and more redshifted the other.
3. Time dilation would be greater one way and lower the other. Muons from cosmic rays reach the surface of Earth because they're time dilated, so there'd be daily and annual change in muon flux.
4. Light ray paths would differ geometrically. Two parallel semitransparent mirrors facing each other, backed with photofilm, with a laser beam sent in at an angle that burns dots on the films. Stable light speed gives dots 100% out of phase. Light speed difference perpendicular to the mirrors puts dots into phase.
5. Photon energy/frequency/wavelength changes with direction. Refraction and interference patterns change. A photon trap could provide endless energy if we harvest from the high energy side.
