Helen Barrett receives an email from Mike Caulfield describing an Inverted LMS, which turns out to be the PLE, independently discovered. More here. She also gets a note from a graduate student, who writes, "I'm trending towards the view that the system we will end up with will use RSS to expose content, tags to organize it, and open ID to selectively share content with certain people." Yes, as people look at the potential of online technology, they begin reaching similar conclusions. Independently, autonomously.