I am not sure what exactly you mean by "friction problems", but one thing I am sure about is that it wasn't half-assed. Tim Roughgarden did an excellent job and

I am not sure what exactly you mean by "friction problems", but one thing I am sure about is that it wasn't half-assed. Tim Roughgarden did an excellent job and went beyond the call of duty to provide advanced videos which covered material that wasn't within the scope of the course. My only problem with the class was that it was too short. I am eagerly awaiting for the second part of the class.