People that know about quantum mechanics tend to talk about it very breezily, leaving us mortals behind. Be left behind no longer, though, with this wonderful little video.
Taking a cue from Schrödinger's famous cat thought experiment, Josh Samani walks us through the basics of quantum mechanics and entanglement. It's still not easy—you're going to have to pay attention—but it does do a very nice job of explaining some damned difficult concepts. [TED Ed]