“Predictive policing could help prevent crime. But do we want a future where computer oracles and spies track us from birth?” Probably not, according to Henrick Karoliszyn. Consider this scenario: “I am walking down the street and a mobile brain scan looks at my brain along with a picture of a training camp in Afghanistan. If I’ve not been there, I’m sent happily on my way. But if I have, my brain lurches a certain way, I’m taken off the street and carted off to Guantánamo and detained indefinitely as a potential enemy combatant.” Would that be moral?