A person named Ben Underwood, who at 2 years of age,had his eyes removed, due to retinal cancer.In this way, if god takes something away from us, then he would give something back to us.He gave a great boon to him which no one in this world has.That is echo location.Even in darkness,bats make sounds with their mouth,which touches surfaces and reflects back from that, is called an echo.That's why, they can travel even at night.In the same way, Ben also makes sounds with his mouth,and he can see the objects in his surroundings with echo location.So, he can do cycle racing,he can climb trees and can do martial arts even though he doesn't have eyes.
