I got to see Luis von Ahn the inventor of CAPTCHA discuss his latest crowd sourced venture, Duolingo, which I'm sure everyone has an opinion about, back in 2013 or 2014 at The LAB Miami in Wynwood.

At that point they had ~24 employees. He said his interest was crowdsourcing and thought most of the engineering effort would go toward the crowdsourced translation, but at that time, it was being handled by just two employees.

They brought on two prominent consultant researchers, leaders in the field of language learning and linguistics. The first question they asked the consultants was which part of speech should they present to the learner first. The consultants didn't have an answer. They decided to dedicate engineers to collecting data in order to answer that question.

A big problem with edTech is that we don't know.

I’ll give him the benefit of the doubt and hope for the best.

My wife has been a high school math teacher for 25 years and has seen waves of tech luminaries give their visions of how tech will radically improve education and learning. She can’t point to any startup that has had a major impact in improving outcomes. I wish I could point her to something that really will have an impact in, or even out, of the classroom for her students.

There is not a huge market of people who actually want to learn something on their own motivation. Get some piece of paper, yes. So the huge market will only materialize if the degree granting institutions adopt something like this.