186000 miles long with zero flex or give. You have an observer at both ends. Observer A has a machine strong enough to turn the bar in either direction. Observer B does not know which way its going to turn. Mr.A turns on the machine and the bar turns to the left. Mr. B sees its direction instantly. (no flex or give in bar) Would there be a frame of reference in which the B end of the bar is seen turning before the A end?? It seems that would be getting the information (bar turning direction) from A to B at faster than light speeds. (It would take a second for the light to get the info there) OK, let me have it, where am I wrong!!