Artificial intelligence

Artificial intelligence (AI) is the intelligence of machines and the branch of computer science that aims to create it. Textbooks define the field as "the study and design of intelligent agents" where an intelligent agent is a system that perceives its environment and takes actions that maximize its chances of success. John McCarthy, who coined the term in 1956, defines it as "the science and engineering of making intelligent machines."

In the Deus Ex series (especially in the first game), many different AI appear:
 * Daedalus, developed by Morgan Everett; rebelled not too long after its creation
 * Icarus, developed by Bob Page; loyal to Majestic 12
 * Helios, born with the fusion of Daedalus and Icarus;
 * Morpheus, a minor AI developed by Morgan Everett;
 * Ava Johnson, developed by Tracer Tong to find JC Denton during the Collapse; Ava has searched the world via an unmanned stealth helicopter for the past 20 years.
 * The Oracle, an extremely minor AI that is only mentioned.

Trivia
At some point in development, JC would have been asked to travel to the moon to confront a rogue, malevolent AI named Ada. Much like the scrapped White House and Texas Border missions, the moon level never made it into the final game, but it would still exist through cameos. The events of the mission would result in a large space freighter crash landing into Earth; in the final game a newspaper can be read that implies Bob Page crashed a competing company's space freighter after they beat him in a bidding war.