very different scoring system and then they normalize it across games another total score across all games how well the agent learns so it is across many many Atari games in terms of Atari games on average how fast is the learning curve go up so you cannot overfeeding onto one game or the other and do well on this score you need to be able to learn well on all of the games to do well on this score alright and then also look here at robustness because there's many agents being trained and this top three curves on