In 1974, Thomas #Nagel gave us one of the most bizarre but philosophically exciting questions of all time: ‘What does it feel like to be a bat?’ This doesn't mean imagining yourself upside down and trying to catch insects in your mouth, because that's not what it feels like to be a #bat. That's a human behaving rather oddly. You see, we know a lot about bats. We know that they use #echolocation to navigate their environment, and this means using high-frequency shrieks to reflect on objects and t