With artificial intelligence rapidly moving into health care, researchers believe personal doctors could well be a bot. Bots, or automated programmes, are likely to play a key role in finding cures for some of the most difficult-to-treat diseases and conditions. AI is better known in the tech field for uses such as autonomous driving or defeating experts in the board game. It can also be used to glean new insights from existing data such as electronic health records and lab tests. It is also increasingly seen as a means for detecting depression and other mental illnesses, by spotting patterns that may not be obvious, even to professionals.