Luis von Ahn Sketchnote From Tools of Titans
What’s the most popular language app in the world? Duolingo. Luis is its co-founder and CEO at the time of the writing of Tools of Titans. He is a computer science professor who is from Guatemala. Amusingly, in one unit he taught, he created a fake website of a solution to a problem he asked his students to solve. What his students didn’t know was that he tracked their IP addresses thus revealing who took to Google to ‘cheat’. He is also the founding father of those annoying captchas on the Internet. The origin story is from Yahoo where some …