habryka comments on Many arguments for AI x-risk are wrong

[habryka]

I was under the impression that PPO was a recently invented algorithm? Wikipedia says it was first published in 2017, which if true would mean that all pre-2017 talk about reinforcement learning was about other algorithms than PPO.

Wikipedia says:

PPO was developed by John Schulman in 2017,^[1] and had become the default reinforcement learning algorithm at American artificial intelligence company OpenAI.