Imagine you and I are walking together along Brighton seafront on a day bathed in sunshine, and we both stop to gaze up at the deep blue sky. It’s a beautiful sight, but are we having the same experience? Do you see the same blue that I see?
It’s easy to assume that we do. After all, we both use the word “blue”, and the colour seems to be a property of the sky, not of our minds. But the science of perception – of how the brain interprets sensory information to bring forth objects, people and places – suggests otherwise. Just as we all differ on the outside, it’s likely that our inner experiences differ too.
