"stuff and space with many rotations, revolutions, having cycloid moments," river quote yes, agreed, that was badly written should read: stuff in space , but what if gravitational waves should turn out to be rotators, like light, or tsunamis? in their element? medium? gravity schocker turning space into a pretzel?, which then travels through spacetime at "c" ? Pretzel = showing more than one rotation, or atleast one.