https://rustcrate.co.uk Rust Crate is a personal blog about building complex software, AI systems, graph infrastructure, product architecture, and decision systems as a solo founder. en-gb Sun, 14 Jun 2026 00:00:00 GMT https://rustcrate.co.uk/posts/i-built-the-wrong-thing-first/ https://rustcrate.co.uk/posts/i-built-the-wrong-thing-first/ Sun, 14 Jun 2026 00:00:00 GMT Most founders build the product. I built the database. It took three years to understand why that was the right mistake.