As a testament to the skills required for the job, all marine pilots must hold a Master Class 1 Certificate, which essentially allows one to captain a ship of any size, anywhere.
About 300 of the roughly 46, 000 students who took the class with an MIT professor filed into test-taking centers around the world in the hopes of earning a "proctored honor certificate" from the class signed by the professor.
If you can earn a certificate for completing an artificial intelligence class taught by a Stanford professor, gee, where does that leave the math professor at the underfunded liberal arts college?