99.999% of everything we think we know is "hearsay". Unless we actually witness something ourselves, we must rely on what other people tell us. We
seriously don't even really know whether there ever was a Flight 93, or even whether that specific plane ever existed. Come to think of it, unless
you were actually in New York at some point since they built the World Trade Center, you don't even know that the WTC ever existed. It's just
hearsay. Maybe all those photos were faked, and everyone who says the WTC was there was lying to us.
There is something called the
Bielefeld Conspiracy, in which it is said that the German
town of Bielefeld doesn't exist. The logic goes, *you've* never been there, right? For most people, this is true. Do you know anyone from there?
Probably not And you don't know anyone who's been there, either - again, true for most people. Therefore, there is no such place. The theory
continues that, anyone who claims to have been there is lying - they've been "reached". Photos are all fakes. Etc, etc, etc.
Of course this is a satire on conspiracy theories, but it bears thinking about. The point is that you can claim "conspiracy" on almost anything in
the world, and with circular logic such as used in the Bielefeld Conspiracy, "prove" that the conspiracy exists.
Of course so-called "skeptics" rely on "faith". So does every single person in the world. We are able to confirm only the most minute fraction
of the information we're given. The rest we have to accept as more or less true, unless giving some compelling reason not to believe it.