World Model · podcast knowledge graph

reCAPTCHA and Duolingo: Luis von Ahn

2020-05-25 · 64 min · episode 231 · 5 entities

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  • → hosted by Guy Raz | Wondery person
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    Feed author/publisher: Guy Raz | Wondery
  • → discusses Business concept
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    Feed category: Business

Entities found in this episode

persons 3

  • mentioned Guy Raz | Wondery person
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    Feed author/publisher: Guy Raz | Wondery
  • hosted by Guy Raz | Wondery person
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    Feed author/publisher: Guy Raz | Wondery
  • mentioned Luis von Ahn (2020 person
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    reCAPTCHA and Duolingo: Luis von Ahn

concepts 2

  • mentioned Business concept
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    Feed category: Business
  • discusses Business concept
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    evidence rules-v4
    Feed category: Business
Episode description as stored
In 2000, Luis von Ahn was starting his PhD in computer science when he attended a talk and happened to learn about one of Yahoo's biggest problems: automated bots were signing up for millions of free Yahoo email accounts, and generating tons of spam. Luis' idea to solve this problem became CAPTCHA, the squiggly letters we type into a website to prove we're human. He gave away that idea for free, but years later, that same idea had evolved into a new way to monetize language learning on the web, and became Duolingo. Today, the popular app is valued at $1.5 billion, and is seeing a big spike in growth while people are confined to their homes. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.