In 1999, inventor Steve Gass had a realization: Humans conduct electricity pretty well; Wood does not. Could he develop a saw that could tell the difference between the two? Steve invented a saw that can detect a finger and stop the blade in milliseconds.
When someone gets hurt by a power tool, there are tons of costs, tons of externalities. We all bear the cost of the injury, in some way. So, it can be in society's best interest to minimize those costs.
Steve's quest to save thousands of fingers brought him face-to-face with roomfuls of power tool company defense attorneys, making him the anti-hero of the woodworking world.
The government estimates that injuries from table saws send something like 30,000 people to the emergency room every year. 3,000 of those end in amputations.
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