Reminds me of the story Feynman tells about Wheeler, who calls him up one day and tries to convince him that there is only one electron in the entire universe.
This single electron is bouncing forward and background through time endlessly, creating the illusion of a multitude of particles (electrons when going forward in time, and positrons when traveling back):
"I received a telephone call one day at the graduate college at Princeton from Professor Wheeler, in which he said, 'Feynman, I know why all electrons have the same charge and the same mass' 'Why?' 'Because, they are all the same electron!'"
This single electron is bouncing forward and background through time endlessly, creating the illusion of a multitude of particles (electrons when going forward in time, and positrons when traveling back):
"I received a telephone call one day at the graduate college at Princeton from Professor Wheeler, in which he said, 'Feynman, I know why all electrons have the same charge and the same mass' 'Why?' 'Because, they are all the same electron!'"
[From http://nobelprize.org/nobel_prizes/physics/laureates/1965/fe...]