Jan - Patrick McManus, who wrote for Outdoor Life, published a story that described that rule about about great gadgets nobody ever invented included inventing an alarm system that would go off when a hunter or fisherman was "comtemplating whether to cross a peeled sapling over a sixty-foot deep river gorge or possibly to make a running leap to land on a moss-covered rock in the middle of some rapids, the life preserveer would activate automatically and shout through two stereo loudspeakers set at full volume, "DON'T TRY IT, YOU FOOL, DON'T TRY IT!""  :) :D ;D :)

Karl