SITUATION EXPLAINED: Ex-OpenAI researcher Nick Cammarata says we can now understand most neurons inside AI models, even at trillions of parameters. • Nick Cammarata, now at Goodfire, co-discovered the famous "cat and car" neuron with Chris Olah in 2019 • Neurons often seemed to fire for unrelated things like cat faces and car fronts. Superposition blamed models cramming in more concepts than neurons, which would make them nearly unreadable • His new essay says that was misread. The cat-and-car…