When I started programming Artificial Intelligence in 1998, Go was impossible to program. We used to say the best program had at best the level of a club player after 6 months of play.
Now Google AI has just beaten one of the best players in the world. This is a massive milestone.
And I think this shows that Artificial Intelligence will take a major part in our lives in the coming years.
I did not think I would say that so quickly but it seems to be happening.
http://www.bbc.co.uk/news/technology-35761246