What if "The Truth" is that UFOs don't exist?
Consider two democracies in a space race against a totalitarian regime. That regime will have no problem marshalling the resources for the race because its rulers can simply command them to be deployed. The democracies, on the other hand, require public support for their tax money to be spent in the contest. One of the democracies is buzzing with reports of UFOs. The other never heard of them. Which one is going to be most supportive of shooting rockets into space to see what's out there?
These considerations lead to the hypothesis -- here extremely abbreviated -- that UFOs are entirely the invention of writers and artists who were assembled by American and British political and military planners in the 1940s who anticipated the Cold War. They contrived a pipeline of fake reports that were fed to a cooperative press. The result was basically a vast magic stunt in which the public became convinced that something was going on even though nobody ever actually saw anything. The alleged witnesses were fictional characters. Working with online newspaper archives I have been assembling material that is best explained by this model.