I used to watch Star Trek and wonder about the "reality" of the transporter beam. Surely, I considered, if you were physically disassembled and then reassembled at the appropriate destination it wouldn't be "you" at the other end but a newly-constructed simulacrum of "you" with all your physical attributes and all your memories but it would effectively be a brand-new person. You would have been destroyed at the transmitter end of the beam.