The SawStop may be pricey when compared to its competitors, but rightfully so, as all of their models come equipped with a mechanism that stops the blade immediately when it comes in contact with flesh. How? It works by using the electrical signals from your finger, which are picked up by the saw blade and trigger the brake cartridge underneath. This cartridge springs upwards and stops the saw almost instantly. Both the blades and brake cartridges are easily replaceable. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one showing what it’s like to be possessed by Cappy from Super Mario Bros.