Awareness and intent: Discrimination With regard to intolerance: there are convictions that one is not going to give up on. This is called "spine" by the stubborn, and "intolerant" by the environment of the stubborn. More examples of the noble ethics turning topsy-turvy.
In fact, in "Yes, Mr. Minister" or "Yes, Mir. Prime Minister", a character described the power of point of view in this sense:
"Ah! it's an irregular adjective. "HE is strange, YOU are idiosyncratic, and I AM an individual."
In my first language there is a proverb: "The hand of every saint points at himself." Go to a Catholic church, look at the statues of saints.
And a saying taken from the three volume set, "Murphy's Law": "Where you stand depends on where you sit."
I am not an exception to this. In fact, I'm guilty of this more than most contributors on these boards. What I try to achieve, however, is that people realize they are like this, too, like the saints, like the tribal members: the most important agent in shaping one's opinion is one's own interest.
And by interest I don't mean only tangible gains, such as money, or possessions. One of the biggest interest to philosophers is to be right and to have their opinion prevail. This is not new; not unique to philosophers; but this is all that is at stake for philosophers. A mana ger in a company, or a sports team's owner, or an army general, may have other factors to consider; the environment that influences their success. But here on the philosophy forums the only measure of success is winning arguments.
So being right gains many times the importance to us on this forum, than being right in our everyday lives. Here, being right is to be being right. So to speak. (Please figure it out.)
Little wonder people act intolerant. Finding disagreement eggs one on to push his point harder. But we don't ever convince anyone else of anything. We may influence the undecided, but those who had committed to a philosophy will never waver even in the face of extreme criticism.
This is what gives the effect of intolerance. One will feel unjustly rejected, because he can't see that his theory is a threat to the theory of others; and other's wont try to shut down his theory just because they don't like his, (frankly, most of the time they are don't care about what others say, because each individual is only only in love with his own postings and opinion), but they will try to shoot him down, because they feel it would exert a threat to their own philosophy.