At that point they had ~24 employees. He said his interest was crowdsourcing and though 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.

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.

Perhaps I am a bit more optimistic, but if AI could give me, let's say, 90% of an average lecturer's capability, at 10% of the price or even less, that is probably extremely valuable. (For one, I would certainly be interested in learning new things that otherwise wouldn't make sense financially)