Even if interpretability of specific models or features within them is an open area of research, the mechanics of how LLMs work to produce results are observable and well-understood, and methods to understand their fundamental limitations are pretty solid these days as well.
Is there anything to be gained from following a line of reasoning that basically says LLMs are incomprehensible, full stop?
Is there anything to be gained from following a line of reasoning that basically says LLMs are incomprehensible, full stop?