@fullfathomfive As far as startups go, duolingo sounds like a home run. A successful business built on crowd-sourcing, deception, and greed. What's not to like.
fullfathomfive
@tchauhan And they started it all with a National Science Foundation grant and publicly-funded research. What a con.
https://new.nsf.gov/science-matters/nsf-gave-duolingo-its-wings