your feedback is really helpful! yes, you are right on the range exercise. the course is not self-contained and I put more work on the lab but did not check on the logic sequence of terms and concepts.
on the hints, I am curious what works in your earlier work on writing tutor.
on the AI tutor, I originally allow a user ask a few qeustions without requiring login, but Claude advised against it for security reasons (possible abuse of unauthenticated model relay/call)