Don't put the cart before the horse: videos are only one way to cover the material, and not always (or even usually) the best one. The people that are strongly

Don't put the cart before the horse: videos are only one way to cover the material, and not always (or even usually) the best one. The people that are strongly pushing videos as an integral component of flipping the classroom are in fact still stuck in a lecture mode---but why use videos of lectures if the complaint about lectures is that they're less efficient than just reading the book? Video is appropriate for some things, but other modalities (such as books, viz software, practice problem engines, etc) are more appropriate for much of the "before you come to class" material.