How Big Data Can Make Us Less Racist

Computing Power Can Help Us Make More Efficient Decisions About Who is Friend or Foe

Donald Trump wants to ban all Muslims from entering the United States and has called for a wall to keep out Mexicans, whom he has called rapists and criminals. Many have called Trump a racist for these views because he lumps all members of a group—good and bad—together. But whether you admit it or not, you are probably somewhat racist too. We all are, to some extent. (If you’re shaking your head, there’s a nifty online test to remind you of your implicit biases.)

It may not be your fault. …