It's more like, some people think they know the answer and to hell with the facts. I understand that the "because I said so" response to "why do it this way" isn't a very satisfying answer but sometimes it's the best answer you can get because you are not at a level where you would be able to understand or appreciate a more complete answer. People refuse to accept that their intelligence, no matter how grand it may be, is not a substitute for wisdom gained through experience.