{"type": "article", "title": "When Chain-of-Thought Helps and When It Hurts: An Empirical Investigation of the Serial-Depth Bottleneck in LLM Reasoning", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/when-chain-of-thought-helps-and-when-it-hurts-an-empirical-investigation-of-the", "original_source": "https://arxiv.org/abs/2608.09942", "published": "2026-08-12T04:00:00+00:00", "accessed": "2026-08-12", "id": "when-chain-of-thought-helps-and-when-it-hurts-an-empirical-investigation-of-the"}