Every time we whine that we didn't know we shouldn't put our hand in the lawn mower while the blade is going, we lose more control over our lives. Companies must spend millions on safety testing, instructions, and defending lawsuits which ultimately raises their price of doing business and the price of buying a lawnmower goes up. Innovative ideas and small start-up companies will never see the light of day because of all the regulations regarding consumer protections, testing, safety regulations, etc., which were ultimately caused by somebody who was too stupid not to realize putting his or her hand in a running lawn mower was a bad idea. Product liability is another one I don't understand. Products are made or designed by humans.
Humans are imperfect at best.
So 1 million widgets are made and one goes bad. I realize there are examples of blatant disregard for other people that result in serious injury to another person, like the Ford Pinto. But those are either exceptions or deliberate, and therefore not accidents. I'm not talking about those. I'm talking about the occasional screw that doesn't get tightened properly, the defective one that got past quality control, a doctor accidently forgetting any little detail, etc.