Does A.I. already exist?

[Big Boss Man]

From what I've read Dave the 8bit guy deleted this from his channel after negative comments. His statement about creating A.I. himself in 20 years stirred the Hornets nest apparently. Also from my understanding, a basic form of artificial intelligence does exist for npc's in video games. But emulating a human brain 100% would be incredibly difficult. Apparently only about 10% is known about how the Brain functions so to fully understand it may take a multitude of centuries, because of the Brains complexity. But that being said it's a fun video if you look at it from an entertainment point of view.