Critical Thinking

Opinion: A belief stronger than impression and less strong than positive knowledge

Just because you think something is true does not mean it is.

An acquaintance told me that she doesn't believe in global warming. "Why?" asked I. "Have you studied the Science? Are you a scientist? Can you explain and refute the theories behind it?"
"No", "no", and "no", were her responses. "I don't need to be an expert to have a valid opinion."

OK, I concede. Maybe you don't need to be an expert to have a valid opinion but being a complete ignoramus with little more than an idea based in some idealic fairy tale world isn't a good launching point toward a valid opinion.

What gives people the impression that their idea is a valid opinion when it is willfully uniformed and ignorant?

Sorry hombre you don't have a valid opinion; "smoke" and "ass" are probably better ways to describe what you've got.