A Brief Introduction to the Firefly Problem

Think of the cells in your heart that are responsible for triggering the rest of your heart to beat and pump blood. They have to all fire in unison or the heart won't work properly. Non-living things like electrons in a material called a superconductor, they all start to oscillate in unison in a certain sense. And it's that property that enables them to transmit electricity with absolutely zero resistance. So yeah, as an applied mathematician, this is where I want to be.