At this stage it seems like a good metric since it's the creator's content. We're adding a feature for question feedback from users, so they can like/dislike/report questions, but very open to other metrics if you have any ideas.

Yep—also in the process of adding learning paths for certain subjects, so you can go from an introductory course to more advanced topics and fill in gaps in understanding. Agreed: our mission is to help students actually learn in the best way possible, we have individual courses now to start out but the goal is to integrate the learning experience.

Very curious to chat about what you guys do, and if you have recs for any literature in the space that we should look at.