Recently, a friend of mine in Oklahoma, Bruce Palmer, participated in a shooting
match on a foggy day. The conventional wisdom among target shooters is that, to sight your rifle, you must use a fluorescent orange disk against a white background. This opinion is so
strongly held that Bruce was severely ridiculed when, in defiance of accepted practice, he used a black disk. Yet he
was the only shooter that day who could see his sighting target. To make this triumph of science over folklore even sweeter, Bruce used a black disk much smaller than the bright orange disks of
his fellow shooters, who had to resort to the ridiculous measure of sighting their rifles by shooting blindly into the
fog and listening for the sound of their bullets hitting targets.