Withdumb

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Definition of Withdumb: A quality you possess if you hold a popular and unfounded point of view.

Withdumb is different from herd instinct. A person who possesses withdumb could achieve the condition with no help whatsoever from the group . For example, if you were the only person in Mongolia who believed in astrology, you would have withdumb, but it wouldn't be because your herd influenced you.

It's easier to cling to an irrational opinion if you know that somewhere in the world there are lots of people who think the same way, especially if those other people seem smart or authoritative.

http://dilbert.com/blog/entry/withdumb/