A potential problem with Massive Online Open Courses is that an error in the course material is likely to affect far more people than traditional education, perhaps an entire generation of people. What kinds of errors are likely not to get caught, both in the students' subsequent experience and education, and in future revisions of the course material? How can we prevent such errors?
The costly kinds of errors are probably not exactly errors but biases leading to harmful path-dependent actions and feedback reinforcing it.
Wikipedia sort of has this problem.
Standardized national education systems, e.g., Soviet, probably have this problem.
Assuming one can affect many people, there exists tremendous incentive for an educator to deliberately or subconsciously introduce errors to benefit itself or a sponsor.
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