Not long ago I bought a new stepladder manufactured in the United States. It is full of stuck on labels warning people about dangers of misusing the product. For a few of us it would seem sensible not to attempt to change the blade on a table saw while the motor is running, but there are people who would win handsomely in court because the manufacturer had failed to post a label warning them of an obvious danger. One can never underestimate the power of unfathomable stupidity.