"CW" wrote in message
...

You can very easily move several feet in one second. If the proximity
sensor was set so as to keep you far enough away from the blade that you
couldn't get to it before it stops, you couldn't use the saw. Tablesaw
accidents are over, the damage is done, in milliseconds.

You know I think if you have to replace a $100 blade and a cartridge it may
serve better to prompt you to find out what you did wrong than if the blade
simply spins down.