Nuclear development is state actors game. If they want to do it they wouldn't need LLM to answer the questions. And most of the work is actually building the program and acquiring materials ..etc. And do all of these development while not make themselves detected by the world (which is impossible task).
But they spent less time and explanation on more important parts like coding performance.
"The model often attempts to use a hallucinated bash tool rather than python despite constant, multi-shot prompting and feedback that this format is incorrect. This resulted in long conversations that likely hurt its performance."
My experience is that most of the models focused on reasoning improvements has been that they tend to be a bit worse at following specific instructions. It is also notable that a lot of 3rd party fine-tunes of Llamas and others gain in knowledge based benchmarks while reducing instruction following scores.
I wonder why that seems to be some sort of continuum?
"The book's main thesis is a differentiation between two modes of thought: "System 1" is fast, instinctive and emotional; "System 2" is slower, more deliberative, and more logical. "
In this case "fast, instinctive, and emotional" models are better at instruction following than "slower, more deliberative, and more logical" models.