The point of a lecture isn't to teach. It's to reify, rehearse, assemble and celebrate.via Stephen's Web.
Stephen ended his post linking to Tony's blog post with what appears to be a throwaway line. It's not. This is where the tension is centred when it comes to teaching. Lectures aren't teaching, but have been used as a proxy for teaching because how else are you going to make sure 300 students get the appropriate number of contact hours? Butts-in-seats isn't a requirement anymore. We can do more interesting things. And we can then use lectures for what they are good at. To reify, rehearse, assemble and celebrate.