Just discovered an ad in the web version of Duolingo. Not sure how long they’ve been there, but I think that’s pretty recent. And it was of the sleazy type that pretends to be a system message, but it stood out since it was in the local language where I live but my computer and browser are set up with English.
Well, servers must have electricity and workers must have food. As Adam Smith said, we don’t rely on the benevolence of the baker to provide us with bread. Luis von Ahn might have a dream to bring free language education to the world, and I may have a dream to fly by flapping my arms, but we wake up and gravity reasserts itself.