What if you could dramatically alter the way you choose to perceive the world? What if, like bats, you could use echolocation to navigate? Dramatically improve your ability to see in the dark like a cat? Be able to see ultraviolet light? Or perhaps have the ability of a butterfly -- to taste with your feet?
Transhumanists, a group who believe that augmentation of human capabilities is desirable, speculate that enhanced hearing and visual aids may soon enable us to customise our perception.