But the markets find conspiracies in everything these days, and round-tripping has begun to acquire darker motives.
Their predecessors had discovered conspiracies; the modern radical right finds conspiracy to be betrayal from on high.
With no wreckage ever found, conspiracy theories abounded, among them that Ms Earhart had somehow been captured by the Japanese or had decided to go incognito and return to live in New Jersey.
Perry advances her ingenious political theories about Jack the Ripper's murderous rampage of 1888 in a historical mystery that finds conspiracy and corruption everywhere, from the queen's royalist supporters at court to antigovernment factions stirring up anarchy in the East End slums.
Some find the conspiracy theories irresistible.
After all, the Internet is the place you can find any conspiracy theory, any crazed notion.
"There is evidence, direct and circumstantial, from which a jury could find a conspiracy," Judge Gleeson wrote in a 16-page decision.
Despite his purported foreign policy expertise, he was one of the first to find a conspiracy in Benghazi among the talking points prepared for Sunday TV shows.
That said, I do find the conspiracy theories to be very understandable.
