““we tend to use different criteria to evaluate propositions or conclusions we desire, and those we abhor. For propositions we want to believe, we ask only that the evidence not force us to believe otherwise—a rather easy standard to meet, given the equivocal nature of much information. For propositions we want to resist, however, we ask whether the evidence compels such a distasteful conclusion—a much more difficult standard to achieve. For desired conclusions, in other words, it is as if we ask ourselves, “Can I believe this?”, but for unpalatable conclusions we ask, “Must I believe this?” The evidence required for affirmative answers to these two questions are enormously different. By framing the question in such ways, however, we can often believe what we prefer to believe, and satisfy ourselves that we have an objective basis for doing so.””
