When a man has a great deal of knowledge, it becomes extremely easy for him to confuse "knowledge" with "wisdom". and forget that the antonym of "wisdom" is not "ignorance" but "folly."
It would, of course, take a trio of Ivory Tower scientists to conceive of tracking down that statistical entity, the Common Man, and testing out an idea on him. And only the Ivory Tower type would predict that egregiously wrongly!
Ronny Bronston has dreamed all his life of getting a United Planets job that would take him off-world. He finally gets the opportunity when he is given a provisional assignment with Bureau of Investigation, Section G. But will he be able to complete his assignment and find the elusive Tommy Paine?