Sometimes your problems do not end by defining something. They only begin.
When the sages had reassembled in Yavneh after the destruction of Jerusalem they said: "The hour will come when someone will seek a word from the Torah or tradition and will not find it." They decided to collect all the discussions and preserve them, together with the names of those who handed them down. Binding decisions should then be made by the majority. But why, they asked, are the minority voices preserved, even if it be the voice of a single sage? One thought that it was in order to deprive them of their influence by recalling and refuting them. But Rabbi Yehuda said: "they are preserved so that one may be able to rely on them when their hour has come."
-quoted in Klaus Schatz's Papal Primacy, p. 175
Due to our fragile condition as rational animals, the process of obtaining the truth cannot be conceived of simplistically as the Triumph of the Right crushing the Wrong. Our own limitations as mortal and sinful creatures should make us wary of making absolute statements that bind all people to belief in this generation and for generations to come. In every error on this side of death there is a seed of truth. And in every truth there is the seed of its own destruction. To want to consider something as absolutely right and another as absolutely wrong can thus cause all sorts of problems.
I am not saying that we must not have firm convictions. I am saying that we should be aware of ourselves as bearers of these convictions and of our own place in history and in the world.