People, get yourself together. First, carbon-fiber props are WAY different than the ones that come with the Phantom. They are blades .Yes - use them at your own risk! I personally never put such ones; as one day my Phantom may even go crazy in public, I don't want to make it a flying chopper! Also, it's not clear from the video WHAT he did to accomplish that, so we learn nothing, just how dangerous the Phantom really is. Come on, you can cut yourself with a kitchen knife too. Just mind your business; and yes, accidents happen.