Field notes on building Polymathy, the Rust answer-engine service from Skelf-Research.https://polymathy.skelfresearch.com/en-ushttps://polymathy.skelfresearch.com/blog/why-actix-and-not-axum/https://polymathy.skelfresearch.com/blog/why-actix-and-not-axum/A small post about why a 2026 Rust web service ships on actix-web instead of axum — the OpenAPI story, the four documentation UIs, and the boring case for not switching frameworks until the tax outweighs the rent.Thu, 28 May 2026 00:00:00 GMThttps://polymathy.skelfresearch.com/blog/why-answer-engines-need-to-cite/https://polymathy.skelfresearch.com/blog/why-answer-engines-need-to-cite/Citations are not a UX flourish on top of a RAG system. They are the contract that lets a paragraph-shaped answer be trusted, audited, and corrected. Here's the plumbing.Wed, 20 May 2026 00:00:00 GMThttps://polymathy.skelfresearch.com/blog/from-10-blue-links-to-one-cited-paragraph/https://polymathy.skelfresearch.com/blog/from-10-blue-links-to-one-cited-paragraph/The decade-long arc that took internal search from ranked URLs to single, sourced paragraphs — and why answer engines are now the default expectation.Tue, 12 May 2026 00:00:00 GMT