So are some water rides at amusement parks.
It just needs to float, not go anywhere in particular.
Alex
ÂThere is a cult of ignorance in the United States, and there has always been. The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that "my ignorance is just as good as your knowledge.Â
-- Isaac Asimov