Something is wrong in my understanding of Relativity. There is an equivalence idea running around, which says that gravity and the distortion of space time by gravity waves acts the same way on all things. That would mean that all objects and light and space experience the same distortion from a gravity wave. Then the tunnel in the LIGO machine and the space in it and the laser beam must all distort the same amount. If there is no difference in these distortions than a gravity wave antenna cannot work. But it has. So where have I been misinformed?