I believe in student-centered learning, outcome-based learning, and active learning. I also believe that can happen without flipping the classroom. There are some students whose learning styles best matches a live lecture with interaction with the instructor and other students and active learning engagement with the content and not watching a short video. I do not think you can replace an excellent instructor's live lecture with a video. Keep in mind I am not talking about a 'sage on the stage' instructor delivering a live lecture, but a dynamic instructor who know how to facilitate learning during their lecture time. I just do not believe that interaction and engagement can be created in a video. Flipping a synchronous online classroom makes is a more asynchronous environment and defeats the purpose of having a live synchronous lecture. I have flipped a face-to-face classroom, only to find students did not favor the format and hindered their learning.