Contrary to appearances, Sean is not yet acting as the rubber band chain fulcrum. He's finding the exact center. Not that it a

Sean tries to determine the middle of the rubber band chain Contrary to appearances, Sean is not yet acting as the rubber band chain fulcrum. He's finding the exact center. Not that it actually mattered, since his whole job was to clap three times to time the release. That's not even the exact center anyway.