The concept must at least exist, as Luke mentions it.
*THREEPIO Is there anything I might do to help? Luke glances at the battered robot. A bit of his anger drains and a tiny smile creeps across his face. LUKE Well, not unless you can alter time, speed up the harvest, or teleport me off this rock!*
I’m pretty sure everyone here on Earth has wished at some point that time could be altered or they could be teleported somewhere else.