In anybody with basic scientific knowledge, the word echolocation must ring a bell. You know, it’s the ability of sending off sound waves that bats and cetaceans use to get around within their respective elements.
Now guess what. Humans can learn it. Some blind people allegedly use it to make shift in the darkness. Undoubtedly sounds a bit far-fetched, but it’s proven, anybody with unlimited time and patience to practise can learn it. All you have to do is surmount your visual bias and click your tongue against your palate till your whole oral cavity is sore and see the result.
I tried it. Gave up after 20 seconds. It didn’t work.
Read the full story here, if you’re interested.