Yes, this is a common one. Although I always like to think that I reason through my opinions sensibly, I'm sure I'm as guilty of this as the next man...

Not just on RIA.

People in glass houses...

Happens all the time here... 

UPDATE: Its been running rampant of late...

The person who suggested this topic had the clarity of mind to know that it was a logical fallacy.

I guess you need to be one to know one. Interestingly, look who suggested this topic, LOL.

The two strongholds of this condition are found in arguments about religion and politics.

I see this(and am probably guilty of it) as well.We are so passionate about what we believe sometimes,that even with a well constructed argument chock full of facts to refute what we think,we still cling to our beliefs.

This was told to me in almost those exact words.

I think a quote from a Mr. John Maynard Keynes (responding to someone accusing him of changing his mind) summarizes my feelings here: When I recieve new evidence, I change my mind, what do YOU do?

This is the lazy man's way of making an argument. In order to test the validity of your ideas, you have to test it against others. This is found a lot in partisaned or ideological thought. People somethings like to think inside the box, but that's not really very good. I know that it's a temptation to remain attached to old ideas, but the only way you can grow is if you test your ideas against others.

Ah, but another favorite among religious zealots, feminists, and ClassicTVFan47. This could best be described as correct by decree. It is completely arbitrary, devoid of any logical foundation. I have always held that the essence of faith is selective belief regardless of proof, and this item is just that. It is an implicit admission that one is wrong; in fact it screams such without actually employing the words I, am, and wrong.

This is the equivalent of Holly Hunter's character in O Brother, Where Art Thou, who is constantly making up her mind and counting to three, thereby ending debate. This is the first refuge of the imbecile and the person afraid of self-examination. Well, that's my opinion and you can't change it no matter what you say, so we'll just have to agree to disagree, is possibly the most irritating phrase in the English language.