Once upon a time, a professor named Josh and his graduate student, Damien, decided to independently measure the spins of a spin-zero, or spin-singlet,
two electron system along a certain predetermined direction. (OK, let me explain: In quantum
mechanics, electrons have a measurable property known as spin. This spin
also has a direction. If a two electron system has zero spin, that just means that the sum of the spins of the individual electrons which
compose the system is zero in any direction.)
Well they started to measure away, keeping far from eachother, so as not to know what results the other one was getting (they
didn't want to influence eachother's measurement's with sighs or groans or what-have-you) when suddenly
(OK maybe not so suddenly, but I felt a good story ought to have something happen all of a sudden) an evil scientist with a foreign
accent named Sasha (the accent, not the scientist) came in and began to measure the spin of one of the electrons, before it got
to the professor! And being particularly
malicious he measured the spin along a direction perpendicular to the direction that Josh and Damien were measuring!
Well, they made their measurements and got ready to compare their answers when suddenly
they noticed that their measurements were completely uncorrelated!
That's when the professor angrily exclaimed: