I've done my share of online video production over the years, and if there's one thing I can attest to, even short videos consume huge quantities of time. This one took three of us all afternoon to do. This one was four weeks' solid work. So when these Coursera MOOCs employing video lectures are being launched a dozen at a time, you can be sure video production is taking a hit. "The primary content delivery tool being used is video. Talking head video of the instructor switching to voice over PowerPoint lectures with bullet point slides and diagrams." Well even that's OK if you can go to exactly where you want to go. But that requires true streaming video, which Coursera videos are not.
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