How does artificial intelligence learn?

Today, artificial intelligence helps doctors diagnose patients, pilots fly commercial aircraft, and city planners predict traffic. These AIs are often self-taught, working off a simple set of instructions to create a unique array of rules and strategies. So how exactly does a machine learn? Briana Brownell digs into the three basic ways machines investigate, negotiate, and communicate. [Directed by Champ Panupong Techawongthawon, narrated by Safia Elhillo, music by Ambrose Yu]. Strobe effects warning: Please note that this animation features flashing lights and colors from 1:52 to 1:56