Daphne Koller of Coursera gives a very intriguing TedTalk. She even throws out some good data. The machine learning class would have to be taught on-campus for 250 years to reach the same amount of students enrolled in the online class last fall. Here are some other impressive numbers.

• 640,000 students
• 190 countries
• 1.5 million enrollments
• 6 million quizzes
• 14 million videos viewed

Those are some impressive numbers. Daphne also provided the following quote.

In many of our [online] courses, the median response time for a question on the question and answer forum was 22 minutes — which is not a level of service I have ever offered to my Stanford students.

Watch the video below. What coursera is doing is completely fascinating. In the second half of the video, she shows some examples of how Coursera is using data to improve education.