I agree strongly with these observations, and have found it to hold true over Udacity's Robotics AI, Web Apps, Programming Languages, and Design courses, and ov

I agree strongly with these observations, and have found it to hold true over Udacity's Robotics AI, Web Apps, Programming Languages, and Design courses, and over portions of Coursera's Machine learning and NLP classes. Edit: and I also agree with Brunov, Udacity courses are not mathematically rigorous.