Neuroscientists are mining nucleic acids, blood, saliva, and brain images in hopes of uncovering biomarkers that could help estimate risk of brain disorders like psychosis and dementia; though the science of bioprediction is young, its prospects are unearthing controversy about how bioprediction should enter hospitals, courtrooms, or state houses. While medicine, law, and policy have established protocols for how presence of disorders should change what we owe each other or who we blame, they have no stock answers for the probabilities that bioprediction offers. The Neuroethics...