“If you hear about data, artificial intelligence (AI) and algorithms in the news, it’s likely to be about discriminatory practices, threats to personal privacy or national security, or another crisis created by the advance of digital technology. Sometimes these problems can feel so entrenched that they are insurmountable. But there is reason to be optimistic. As it turns out, the challenges posed by these modern fields of data science and AI can be addressed by one of the oldest: ethics.”