For the White Queen believing that wouldn't be so difficult. After all:
"Alice laughed: "There's no use trying," she said; "one can't believe impossible things."But even for someone like me with a taste for rumors that's going a bit too far. I won't claim that faking the moon landing was "impossible" but in cases such as these Occam's razor should be a basic rule of thumb. The problem is that there are plenty of intelligent people out there who have found their way to web sites that make sense to them, even though what they report is pretty much totally off the wall. And of course one of the pleasures of a site like Snopes (and I guess of the web as a whole) is that when checking out one issue (or, in this case, rumor) it's so easy to stumble upon numerous others that you didn't even know existed. With the help of the web Alice's White Queen would have had an even easier time of it.
"I daresay you haven't had much practice," said the Queen. "When I was younger, I always did it for half an hour a day. Why, sometimes I've believed as many as six impossible things before breakfast."