Do you want to interpret this as a fallacy in relativity? I posted part of this example before. Which is: what if you had 2 rocket ships a and b traveling from planet X to planet Y and they were both going 0.9999 times (or very close to) the speed of light, let d be the distance from X to Y, and the ships are 7/8d distance apart and a was only 10mi or so from Y and b was only 10mi or so from X. Then observers on both crafts would observe that the distance from X to Y would only be about 20mi or so (Ʃ of all the distances) because of the very well known length contraction formula. And what if rocket ship 'a' suddenly took a right angle turn? Then the distance from b to Y would suddenly seem to increase to many thousands of miles! I didn't go as far with this the last time I said there appears to be a contradiction here and one of you very intelligent physicist wannabees told me this is physics, not math. But, Einstein's conclusions were all based on these very same sort of math calculations. It was because many of his results were verified by experimental observation that they became accepted. What say you to the above?