However, our expectation is that a tree falling in the forest could kill us even if we didn’t hear and see it. That’s why we look when we cross the road. The fa

However, our expectation is that a tree falling in the forest could kill us even if we didn’t hear and see it. That’s why we look when we cross the road. The fact that we’re subject to all sorts of things that can cause us harm without sensing them makes the case a lot more compelling that the light meter exists when we blink.