It's all about the "suspension of disbelief." We have been, through years— generations even— of exposure to 24fps films, that we should suspend our disbelief when we experience the magic of narrative cinema at this frame rate. The phenomenon of persistence of vision takes at least 24fps to occur in a fiction film. (Below that rate, the image is too jumpy to be believable.) If you've ever shot 8mm film at 18fps, you know that you can make an image (and save film!), but the result is not believable as a narrative film; it's just too jumpy. Funny thing, at 24fps with a 180 degree shutter, the audience in a film-projected theater is actually sitting more in darkness than in light! Persistence of vision in the brain joins these images into a stream. So, 48fps approaches 30fps, interlaced television. Think: sporting event! Do you want to see a fictional story that presents an image that looks like interlaced, U.S. television coverage of a football game? This is a question that can only be answered by the individual. Reserve judgement. See it for yourself, then decide. No matter what we, working professionals, think of 48fps projection, whether or not it survives is out of our hands. Audiences will vote with their wallets.