No Smoking Sign
Signs are probably the least effective methods of educating the public. More often than not, they are ignored. In fact, the opposite of the desired effect happens. When people see no parking signs, they’ll want to park at that location even more. See a speed limit sign and you’re bound to go over. Ever seen a do not litter sign under which there isn’t a huge pile of rubbish? Put up a do not disturb sign on any popular instant messanging (IM) platform and you’re likely to receive buzzes in quick succession. So what do you expect when you see a no smoking sign?
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