The Higgs Boszon, the Particle at the End of the Universe

Entanglement is the fact that you cannot separately and independently predict what the observational outcome is going to be for the electron and the positron. It's not a rare, special thing in quanta mechanics; many things are entangled with many other things. The unique time when things are not entangled with each other was discovered by einstein but it took him several years of searching before he got there. He never really thought that that was the final answer or something quite like that.