Artificial intelligence means computer programs that learn from very large amounts of data. Then they use what they learned to do tasks that usually need human intelligence, such as translating and recognizing pictures. These programs are useful in medicine, where they help doctors find diseases early. They are also useful in transport, where they organize the movement of vehicles. These programs are now also in phones and homes. But a program does not understand the world as a person does. It can make mistakes if its data is incomplete or biased. For this reason, experts say that artificial intelligence is a tool that helps people. It does not replace their review and their decision.

Question: In the text, the word "biased" means: