That there is so much we don't know just never fails to impress me.
Rob
>>If his experiment with splitting photons actually works, says
University of Washington physicist John Cramer, the next step will be
to test for quantum "retrocausality."
That's science talk for saying he hopes to find evidence of a photon
going backward in time.
Quantum theory describes the behavior of matter and energy at the
atomic and subatomic levels, a level of reality where most of the
more familiar Newtonian laws of physics (why planets spin, airplanes
fly and baseballs curve) no longer apply. <<