3. Show HN: RAGless – similar to RAG, but $0 LLM API costs at runtime (github.com)
RAGless is a semantic retrieval system that answers questions about your documentation, without using an LLM at runtime. - EmilResearch/RAGless
4. Show HN: A 3-page information-theoretic lower bound on random TSP (zenodo.org)
This paper presents an information-theoretic proof demonstrating that the general Traveling Salesman Problem (TSP) cannot be solved in polynomial time by any Deterministic Turing Machine ($P \neq NP$). By formalizing an adversarial worst-case model where edge weights are mutually independent and identically distributed random variables, we establish that local evaluations yield zero mutual information regarding global optimality, precluding any macroscopic algebraic shortcuts. Furthermore, we prove that even optimal dynamic programming strategies like the Bellman-Held-Karp algorithm are structurally bounded by an exponential state space $\Omega(2^n)$ because independent sub-tours cannot be losslessly compressed or factored by any deterministic state transition function.