This is purely subjective, but I could not keep myself awake and sustain interest long enough to finish the one section I paid for. I guess I should have tried one for free first...I tried to tell the Coursera staff to remove the course from my list and that I did not need my refund, but sadly, it sits on my enrolled courses list, perhaps permanently until I cancel my account. Luckily, I did figure out how to turn off the almost twice daily notifications.
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