Joshua Achiam, an AI researcher and Chief Futurist at OpenAI known for safety and alignment work plus authoring Spinning Up in Deep RL, posted on X. The message opens with the line "All of this has happened before. All of this will happen again." It continues that in a long-lived roughly homogeneous universe with wide enough diameter, the singularity happens many times in many places. Achiam added that observers can probably speak of a singularity formation density in a statistical limit at certain points in time.