turadg asked: I really like how you and other Khan Academy data scientists post your analyses. As a graduate student in HCI and learning sciences, I've been surprised that none of the analyses (that I've seen!) have any cognitive modeling. Is that true? If so, why? Thanks.
While I certainly am nowhere close to giving up, in the limited experience I have comparing cognitively-based models versus, let’s say, more purely empirical models, the purely empirical models have performed much better.