How people judge humans and machines differently, in scenarios involving natural disasters, labor displacement, policing, privacy, algorithmic bias, and more.Using original data drawn from more than eighty experiments, this book compares people's perceptions of human and machine actions. People's biases vary according to a scenario's moral dimension, the presence of uncertainty, and basic features of human psychology. Moreover, people are more willing to forgive humans in accidental situations--but they also attribute intent to human actions that cannot be easily excused as accidental. These experiments show that even in identical scenarios, people tend to judge humans by their intentions and machines by their outcomes.