After introducing a bribe: "In one week, the percentage of adults in the district who had taken a test went to over 80 percent from less than 20 percent" Thin

After introducing a bribe: "In one week, the percentage of adults in the district who had taken a test went to over 80 percent from less than 20 percent" Think of all the expensive public service announcements we see in the U.S. (AdCouncil etc.). How many more objectives would be met if this more cost-effective strategy were adopted instead? In this case the bribe contents looks pretty useful. But even with junk, people will waste silly amounts of time in line if it's free.