T. C. Chamberlin points out a human tendency that is spread universally and equally among all ideologies and worldviews. As Pascal noted: in a (sinful) world such as ours, we cannot possibly come to know the truth unless we first love the truth for its own sake.
[Once a person adopts a particular theory] there is an unconscious selection and magnifying of the phenomena that fall into harmony with the theory and support it, and an unconscious neglect of those that fail of coincidence. The mind lingers with pleasure upon the facts that fall happily into the embrace of the theory, and feels a natural coldness toward those that seem refractory…There springs up, also, an unconscious pressing of the theory to make it fit the facts and the facts to make fit the theory…The search for facts, the observation of phenomena and their interpretation, are all dominated by affection for the favored theory until it appears to…its advocate to have been overwhelmingly established. The theory then rapidly rises to the ruling position, and investigation, observation, and interpretation are controlled and directed by it.” (T. C. Chamberlin, “The Method of Multiple Working Hypotheses,” Science 148 (1965), p. 755)
This tendency was similarly observed and lamented by Francis Bacon long ago:
“The human understanding when it has once adopted an opinion…draws all things else to support and agree with it. And though there be a greater number and weight of instances to be found on the other side, yet these it either neglects and despises, or else by some distinction sets aside and rejects, in order that by this great and pernicious predetermination the authority of its former conclusions may remain inviolate.” (Francis Bacon, cited in Dale C. Allison, The Historical Christ and the Theological Jesus, p. 79)
I know of no other response but to say, firstly, “Let him who is without sin cast the first stone,” and secondly, to then commit by God’s grace to “go and sin no more.”