The Biggest Ideas in the Universe | Q&A 7 - Quantum Mechanics

The Biggest Ideas in the Universe is a series of videos where I talk informally about some of the fundamental concepts that help us understand our natural world. Exceedingly casual, not overly polished, and meant for absolutely everybody. This is the Q&A video associated with Idea #7, “Quantum Mechanics.“ Mostly it’s about the double-slit experiment, and why the wave function isn’t just a cheap tool for calculating probabilities. But then at the end I get into the weeds a bit talking about the sense in which quantum states form a vector space. My web page: