Less information can be better. Or more accurately, conditional probabilities can be better than unconditional probabilities. For example, a large number of un

Less information can be better. Or more accurately, conditional probabilities can be better than unconditional probabilities. For example, a large number of unnecessary antibiotic treatments, which fuel resistance, are triggered by doing diagnostic testing on patients with no symptoms. "Diagnostic stewardship" is a concept that exists for a reason.