As the article implies US legislation lagged 30 to 60 years behind other parts of the world so creating a gap for devices such as the SawStop. My issue with that technology has always been that it seems incompatible with so many other woodworking machines, such as band saws, shapers, sanders, drill presses, lathes, etc. That and the fact that it can't be retrofitted. To my mind it's another piece of technology like airbags in cars - a sticking plaster to solve a problem which probably wouldn't occur if a good primary approach to safety is adopted. By that I mean proper training, riving knives, proper guarding, proper design and use of push sticks, "short" Euro-style rip fences, etc.