Hi,
Having heard about this video from a colleague who saw it via link at some other site I am glad now to have seen it for myself, but I think we need to remember this is a device from USA where they use "dado"cutting blades on table saws and think it is safe to stand in front of a wobbly blade running at ****rpm !! also in the USA table saws are not fitted with blade gaurds and only recently have they considered it ok to fit riving knives to their saws, over here (UK) it is mandatory, as is recognised training to use such saws in the work place, but as for the DIY'er then I think that a bit of commonsense and self preservation are the best way to prevent accidents when using machines.