It's theorised that birds use quantum effects to navigate with help from the Earth's magnetic field. And how do massive flocks move as clouds in such exquisite and controlled close proximity? Inspired by the movie 'Everything Everywhere All At Once', mathematician and lecturer in information systems Dr. Ian Storey outlines the two main theories of QM - the Copenhagen interpretation and the multiverse. He thinks one is arrogant and anthropocentric, while the other is, well, hard to get your head around. Either way, "our intuition is not built around understanding events at the quantum level" he says. Easy listening on a complicated subject.