That’s not quite right. The provision of all true but biased information (e.g. only those facts that are consistent with guilt) without complete awareness of the exact nature of the bias applied can increase the chances of an error.
Even unbiased info can’t be said to always help. A good example is someone who has crazy priors. Suppose someone has the crazy prior that with probability .99999 creationism is true. If they have somehow aquired evidence that overcomes this prior but further information about problems with evolutionary theories would leave them with still strong but not convincing evidence that evolution is true then providing them with that evidence increases their chance of error.
More generally, disagreement in priors forces one to believe that others will make better decisions if evidence that exacerbates the errors in their priors is provided.
That’s not quite right. The provision of all true but biased information (e.g. only those facts that are consistent with guilt) without complete awareness of the exact nature of the bias applied can increase the chances of an error.
Even unbiased info can’t be said to always help. A good example is someone who has crazy priors. Suppose someone has the crazy prior that with probability .99999 creationism is true. If they have somehow aquired evidence that overcomes this prior but further information about problems with evolutionary theories would leave them with still strong but not convincing evidence that evolution is true then providing them with that evidence increases their chance of error.
More generally, disagreement in priors forces one to believe that others will make better decisions if evidence that exacerbates the errors in their priors is provided.