Found the material and lectures to be outstanding. I am 20 years removed from school where I earned a Math degree from a top school and I am now taking classes that always interested me and never had the time to fit into my schedule: Psychology, Genetics, Modern Social Thought and Constitutional Law from Yale, MIT and Oxford. This is what school should have been. You do it at your own pace, dabble where you want, and I am knocking off a couple a month. Good fun ! What's even more important is that I am introducing my kids and their friends families to these lectures, so that this material can be accessed by young minds at the high school and teen levels. For folks from difficult economic circumstances who cannot afford to attend these elite schools, this was a fabulous idea. Thank you Yale, MIT and all the rest for accessibility to these gems.