> I'm close to someone who teaches at a university, and they're making heavy use of in-room essays written in blue books. This ensures that the work is purely t

> I'm close to someone who teaches at a university, and they're making heavy use of in-room essays written in blue books. This ensures that the work is purely the students, but I think it also has the side-effect that the grader is also working manually. Sometimes the best way to prove authenticity is through inefficiency. It's a foundational principle of cryptography.