
Why do we never notice our own blind spot, and how can watching lips help us hear in a noisy room? Explore how attention, context and past experience shape what we sense, and how a ruler can settle an argument about two lines.

Why do we never notice our own blind spot, and how can watching lips help us hear in a noisy room? Explore how attention, context and past experience shape what we sense, and how a ruler can settle an argument about two lines.