"Will algorithms help people or hurt them? What about artificial intelligence in general? If consumers know what they need to know, and do not suffer from behavioral biases, algorithms and AI are likely to be helpful. Consumers will be more likely to get what they want and need. But if consumers lack information, algorithms in particular will be able to get them to make harmful or foolish choices. And if consumers suffer from behavioral biases, such as unrealistic optimism or a focus on the short-term, algorithms will be able to produce serious harms. These points suggest a strong need for regulatory responses, designed to protect consumers against what is here, and what is likely to get worse. And the same points apply in the context of investors, workers, and participants in politics. Democracy and self-government are at risk; there is a great deal that we can do to reduce that risk. Keywords Algorithms, Artificial Intelligence, Price Discrimination, Product Differentiation, Behavioral Economics, Consumer Markets, Labor Markets, Democracy"-- Provided by publisher.