I’ve written before about NPR’s How I Built This podcast with Guy Raz and specifically about the Sal Khan episode, which is one of my favorites. Khan is the founder of the Khan Academy, and his commitment to free global education combined with his good-natured self-deprecation is wonderful. I recently heard another fantastic How I Built This episode with Luis von Ahn, the Guatemalan entrepreneur who founded both reCAPTCHA and Duolingo. His story and the way his mind works – maximizing efficiency – is tremendous. Did you know that as you type in CAPTCHA letters you are transcribing the world’s books? Take a listen.
