It's opened and free now https://openlearninglibrary.mit.edu/courses/course-v1:MITx+8.370.1x+1T2018/about https://openlearninglibrary.mit.edu/courses/course-v1:

It's opened and free now https://openlearninglibrary.mit.edu/courses/course-v1:MITx+8.370.1x+1T2018/about https://openlearninglibrary.mit.edu/courses/course-v1:MITx+8...