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+# What is a gameplaying AI?
+`Games are interesting because they are too hard to solve.`
+
+-Russell, Stuart and Peter Norvic
+
+---
+How fair are the matches between game AI's and human players?
+
+Once we solve Starcraft we have solved real world problems.
+
+From "When are we done with Games? (2019) N. Justesen, S. Risi.
+
+---
+When will AI exceed human performance?
+
+There are several areas of popular interest in AI (2018).
+
+---
+Commercial interest in AI game players:
+* Teammates
+* Enemies
+
+"AI is faster than human game playtesting"
+Zhao
+
+---
+AI competitions use benchmarks.
+
+# Moravec Paradox
+About AI
+
+Things that humans find hard: no problem.
+
+Things that humans find easy: not so much.
+
+This leads the trend of generalization in game playing AI's that cam play multiple games.
+
+---
+DQN is a general AI for retro arcade games
+
+Agent57 is a state-of-the-art Ai from 2020 for this
+https://www.deepmind.com/blog/agent57-outperforming-the-human-atari-benchmark
+
+Other communities on AI
+http://www.gvgai.net/
+https://github.com/GAIGResearch/GVGAI
+
+---
+What are the long-term plans for AI
+
+AlphaStar and OpenAI Five show that agents can be trains without explicit hierarchical macro-actions to reach superhuman skill in games.
+
+Raiman, Jonathan, Susan Zhang, Filip Wolski. "Long-term planning and situational awareness in OpenAI five" (2019)
+
+https://openai.com/blog/openai-five-defeats-dota-2-world-champions/
+
+---
+When will it end?
+
+When there's an AI a human can play against it for a long period of time.
+
+Justesen, Niels, Michael S. Debus, Christian Risi. "When are we done with games? (2019)
+
+# AI game player milestones
+In 1950 Claude Shannon published his work on how to program a computer to play chess.
+
+1952 Checkers/drafts by Stachey. Logical or non-mathematical programs.
+
+1979 Backgammon H. Berliner. In 1980 it beat the backgammon world champion.
+
+1992 Jonathan Schaeffer beats the world champion.
+
+1997 Deep Blue beats world chess world champion Garry Kasparov.
+
+2002 Scrabble. Brian Sheppard created a world-champion caliber Scrabble AI.
+
+2007 Jonathan Schaeffer indicates Checkers is solved with AI.
+
+2009 The first Mario AI competition to 2012. Nintendo did not agree with the competition using the graphics. Lasted until 2012.
+
+2015 Atari. Human-level control through deep reinforcement learning.
+
+2016 Go. An AI beat the world champion.
+
+2018 Head-up no-limit Texas hold'em Poker. Libratus Ai beats top pros in this type of poker.
+
+2019 Dota 2. Long-term planning and situational awareness in OpenAI five. Jonathan Raiman, Susan Shang.
+
+2020 Atari 57. The AI agent was able to play all 57 Atari games and outperform human players.
+
+# How might we build a game playing AI?
+
+What is the DQN?
+
+We start by playing the game.
+
+We ask questions:
+* How do we get points?
+* Which way is the ball going?
+* Where are the bricks?
+* How do we get the ball on the correct side?
+
+The AI gets the pixels view of the screen (RGB), score and whether the game is over or not. It outputs Left, Right or No-move.
+
+### Reinformcent learning is
+> How agents can learn what to do in the absence of labeled examples of what to do.
+> Playing a new game you don't know and after a hundred or so moves, the opponent announces if you lose.
+-Russell, Norvic
+
+The key elements of a reinforcement learning algorithm are:
+* States (The pixels coming in)
+* Actions (Left, Right, Nowt)
+* Rewards (The score points)
+
+By formalizing the problem we can operate on it to simulate how a human plays a game (limited access)