Daniel Kish was blind from retinoblastoma before the age of two. Today, he uses echolocation to read his surroundings.
I accompanied Kish on several occasions as he cruised the busy streets of Long Beach. The outside world is an absolute cacophony. Every car, person, dog, stroller, and bicycle makes a sound. So do gusts of wind, bits of blowing garbage, and rustling leaves. Doors open and close. Change jangles. People talk. Then there are the silent obstacles — what Kish calls urban furniture: benches, traffic signs, telephone poles, postal boxes, fire hydrants, light posts, parked vehicles. Kish hears the sonic reflections from his click even in a place teeming with ambient noise. “It’s like recognizing a familiar voice in a crowd,” he says. The load upon his mind is undoubtedly immense. Yet he casually processes everything, constructing and memorizing a mental map of his route, all while maintaining an intricate conversation with me. It’s so extraordinary that it seems to border on the magical.
What human beings are capable of never ceases to amaze me (h/t RL).
Edit: Check out the BBC’s video of Daniel using echolocation to ride a bike.