Google Self-Driving Car has its first at-fault accident, a minor collision with a bus. The event sparks a broader discussion of liability in autonomous vehicles.

DeepMind AlphaGo defeats world Go champion Lee Sedol 4-1 in Seoul. "Move 37" in Game 2 becomes a legendary moment in AI history.

Facebook launches its Messenger Bot platform at F8. An explosion of chatbot startups follows, though the early hype would fade faster than expected.