Physics is a field that continues to surprise. In the early 1900s the belief was that it was effectively finished — apart from a few minor details, there wasn’t anything new left to discover. Those few minor details ended up being the set of insights Einstein had which revolutionized our understanding of energy, matter, space, and time.
While finessing what we now know as General Relativity, Einstein came across something that didn’t make sense to him; actually it so offended his sense of order that he chose to work around it rather than explore it. Later physicists, following up on Einstein’s work, found that it led to indeterminacy, which essentially means that we cannot simultaneously know a particle’s speed and its location. The physics of Quantum Mechanics developed from that.
More recently, the LHC in Europe may have found traces of a subatomic particle which might or might not tie together current theories in physics; or it could be a statistical anomaly. And elsewhere, developments continue in teleportation.
Not the Star Trek version of it. So far it’s only subatomic particles that have been teleported, but it is happening. Essentially what happens is a particle’s state is analyzed, during which the particle is disassembled, after which it gets reassembled on the other side of the room. That it’s the same particle is confirmed by its quantum state — a sort of fingerprint. Eventually, we can imagine the same happening for larger items such as atoms, marshmallows, missing socks, and possibly even living entities such as goldfish or people.
So suppose you step into a teleporter one day, and zap yourself to the other side of the planet, where you spend some time shopping and eating interesting foods. When you’re finished you teleport yourself back home. As you step out of the booth, you’re accosted by a wild-eyed person who insists that you’re no longer you, that you’re actually dead.
