I create 1000 pairs of entangled particles and let them travel very far away. Then I let the 1000 right particles pass through a double slit experiment. At the time when the right particle has passed the slit, but not yet hit the screen, I can choose to detect the 1000 left particles. If I detect/collapse the left particles, then I know which path the right particle took? If so, then there is no interference pattern on the screen? Then I, located where the left particles are in space, can choose what pattern appears on the right particle screen instantaneously? ie faster-than-light.