What is your take on defeat of Go World Champion by Alpha Go System designed by google?

Google’s Alpha Go system defeated World Champion in Go game by 4–1. This came 10 years earlier than it was thought possible by scientists due to complexity involved in this game called Go. Interesting thing about the system is that it wasn’t taught how to play the game but only shown previous games to the system called as “Deep Learning”. Do you think prediction by Stiffan Hawkings that artificial intelligence will pose threat to humanity in future is becoming a reality?