The questioning of the moon landings perhaps being a hoax is one way to address and apply the lessons of Relativity Theory, specifically
Special Relativity, as it deals with absolute knowledge.
Absolute knowledge only exists on a local scale as mutually observed and agreed upon experience.
I write this, I post it to ATOF, you read it, I read it. We can agree with absolute certainty that you and I are reading this post on ATOF. We can not agree with absoulte certainty that I, UG, personally wrote it, or that I, UG, actually posted it. We can say with absolute certainty that it was posted using my AT account.
Six pairs of Apollo astronauts can, amongst themselves as individual pairs, agree to be absolutely certain that they, each individual pair, landed on the moon. But the six pairs of astronauts cannot say with absolute certainty that the other five pairs actually landed, as they themselves had, since the 12 astronauts were not all on the moon at the same time, in the actual company of all the others.
Absolute knowledge exists only locally amongst people with certain knowledge gained from shared experience.
Which is why moon landing hoax's, faces on Mars, flying saucers and alien abductions, gods & goddesses will always find fertile ground in the shadows of uncertainty and spectulation.
How might we best manage the intellectual conundrum of there being no relativistic, high-confidence, universal absolute as we quest for universal truth and knowledge?