As I said quite plainly in my post, it's because you're basing it on incorrect information. Further, there are some places where what your opinion is simply doesn't matter. Were my opinion that 2+2=5, would the fact that it's my opinion make it not-wrong?

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Gillian

"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"

"You can't erase icing."

"I can't believe it doesn't work! I found it on the internet, man!"