I got that, and it's great that it's public. That has a lot of impact, a lot of it auxiliary. The key question is suitability-to-purpose. Without the small gro

I got that, and it's great that it's public. That has a lot of impact, a lot of it auxiliary. The key question is suitability-to-purpose. Without the small group work and the collaboration, a web site like this isn't what I'd like to point strangers on the internet wanting to learn algorithms. Without that, something more is needed. Two decades ago, we were figuring out what that "something more" ought to be so learners can be successful independently online. Today, we know. I'm not asking Berkeley to do that additional work. It's a ton of work (probably a half-million dollars in human time). I'm just surprised no one has done it. To make an analogy, if someone needs a car, giving them plans to build one is less than constructive. But that doesn't take away the merits of having an open-source car. It's just a different purpose.