<p>When does vision loss become blindness? This week we're revisiting a talk by writer, audio producer and editor Andrew Leland as he explains how his gradual loss of vision revealed a paradoxical truth about blindness — and shows why it might have implications for how all of us see the world.</p><p>Want to help shape TED’s shows going forward? Fill out our <a href="https://bit.ly/tedpodcastssurvey" rel="noopener noreferrer" target="_blank">survey</a>!</p><br><p>Become a TED Member today at <a href="http://ted.com/join" rel="noopener noreferrer" target="_blank">ted.com/join</a></p><hr><p> Hosted on Acast. See <a target="_blank" rel="noopener noreferrer" href="https://acast.com/privacy">acast.com/privacy</a> for more information.</p>