#4. "Seeing" With Your Ears (A.K.A. Echolocation)
This is the superpower that the Daredevil has. He overcomes his blindness with sonar-like sense of hearing that's so sharp it basically replaces his vision.
This is a real thing. In the real world we call this echolocation, and guys like Daniel Kish have it. He is completely blind and has been his whole life. Despite this, one of his favorite pastimes is mountain biking.
And as easy as it is to imagine this guy crashing hilariously through your window clutching a Braille map, he's actually pretty good at it. And he does it all by using sound to mentally paint a picture of the world around him, and doing it so fast he can avoid trees, boulders and bears while speeding down the side of a mountain.
You may remember that we previously wrote about another guy with this ability, Ben Underwood. This is the guy who trained Ben.
Why Can't We Do This All of the Time?
For the same reason people who use calculators suck at math. Most people choose the easy way, in this case relying on your vision to tell you where things are, and lose the ability to do it the much harder and far more awesome way.
But any one of you can pick up echolocation even without losing your eyes in some kind of superhero origin story. Tests have found that blindfolded people can learn to judge distances to objects based on the echoes of their own footsteps. Soon they can even judge the shape and texture of unseen objects by echo alone. Try it; close your eyes and slowly walk toward a wall while talking, listening to the change in your own voice as it echoes back to you.
Your brain recognizes all of those subtleties in echo (you've been hearing them your whole life, after all) and it's just a matter of training yourself to use them.
To fight crime.