“What we see is a model world, constructed by the brain in much the same way as VR software works in the computer. An animal’s world model is constructed to help it survive. A bat, using echoes, and a swallow using light, need the same kind of world model: suitable for high-speed aerobatics catching insects. Do bats even hear in colour? Our perception of reality is a virtual model run by software in the brain, constrained by sensory inputs…That’s what I’m excited to explore in my talk at the Vision Summit.”