The third video is the best. Interesting to say the least. But to counter milewsky80's argument, being someone who has cut their finger on a similar device, that blade reacted to the hot dog a lot faster than I reacted to my finger almost getting lopped off. My reaction time is pretty darn quick but that little flesh wound on that hot dog is nothing compared to the huge gash I have on my finger which cut a couple tendons and a nerve. It's basically the difference between a band-aid and 2 hours of surgery and months of rehab. It's a great idea!!!