Amy and Sheldon try to figure out what the supposedly "perfect gift" was that Leonard and Penny gave them on The Big Bang Theory. "The Wedding Gift Wormhole" is the second episode of the show's 12th season.
Sheldon: Here's the problem with teleportation. Leonard: Lay it on me. Sheldon: Assuming a device could be invented, which would identify the quantum state of matter of an individual in one location and transmit that pattern to a distant location for reassembly. You would not have actually transported the individual, you would have destroyed him in one location and recreated him in another. Leonard: How about that. Sheldon: Personally, I would never use a transporter because the original Sheldon would have to be dissintegrated in order to create a new Sheldon. Leonard: Would the new Sheldon be in any way an improvement on the old Sheldon? Sheldon: No, he would be exactly the same. Leonard: That is a problem