http://en.wikipedia.org/wiki/Retrocausality http://en.wikipedia.org/wiki/Retrocausality "Time runs left to right in this Feynman diagram of electron-positron an

http://en.wikipedia.org/wiki/Retrocausality http://en.wikipedia.org/wiki/Retrocausality "Time runs left to right in this Feynman diagram of electron-positron annihilation. When interpreted to include retrocausality, the electron (marked e-) was not destroyed, instead becoming the positron (e+) and moving backward in time."