Sometimes, we hear or read things that just don't make sense. Our natural instinct is to reject them, especially if they go against what we hold to be true.

The technical term is Confirmation bias. It can have deadly consequences in some situations. This is especially true when working with heavy machinery, like in aviation. There have been cases when a crew read a map wrong and then ignored all the warnings of their flight instruments that they were headed right into a mountain, stuff like that. Or running out of fuel, because they convinced themselves that all the warnings were fake.

See Air Transat Flight 236 as an example. They had to glide an Airbus A330 for 121km after basically ignoring a fuel leak. The first computer warnings didn't make sense to them, so the pilots determined there was a major computer glitch but the aircraft itself was OK. After that, they ignored all the other problems that popped up on their displays until they run out of fuel.