You can't hurt your thumb with one but pounding nails is virtually
impossible.   Safety measure, you know.

The Propane filling business reeks of such foolishness.  For many, many
years the method to fill propane tanks was to connect the filler hose, open
the 80% level bleeder, fill until liquid (white) propane escaped, stop
filling, close bleeder.  Not too hard, even for a caveman (apologies to the
gecko).  Worked for portable and DOT tanks.  Fewer citizens died of propane
accidents than swimmingpool accidents or rattlesnake bites, or accidental
electrocution in the bathtub.  Now we have OPDs, and all sorts of barely
necessary accoutrements brought to us by our litigious/insurance society.

Give a bored legislator an ounce of authority and he will use it to shove
unnecessary legislation down the throats of the public for "their own good".
And make a whopping good wage doing it.

To clean up the gene pool it has been recommended that we just remove all
the whining er warning labels.  Self correction will soon come along.

Sheesh.