Physics
The EPR Paradox
Quick fact
The EPR paradox was published in 1935 by Albert Einstein, Boris Podolsky, and Nathan Rosen, and Einstein famously referred to the phenomenon as 'spooky action at a distance'.
Why this is interesting
Imagine two dice that always land on matching numbers, even when rolled on opposite sides of the universe. Could it be that they secretly agreed before the roll? This is the puzzle at the heart of the EPR paradox.