https://explaincourse.com/ Practical writing on AI systems: mechanisms, trade-offs and decisions you can use this week. en Sun, 18 Oct 2026 10:54:08 GMT https://explaincourse.com/article-retrieval-or-the-model https://explaincourse.com/article-retrieval-or-the-model Tue, 13 Oct 2026 09:00:00 GMT A three-minute test that tells you which half of a retrieval system failed, before anyone changes a prompt or swaps a model. https://explaincourse.com/article-what-your-ai-product-actually-is https://explaincourse.com/article-what-your-ai-product-actually-is Sun, 27 Sep 2026 09:00:00 GMT A map of the eight parts around the model, and a five-minute method for drawing it for any product. https://explaincourse.com/article-confident-and-wrong https://explaincourse.com/article-confident-and-wrong Sun, 20 Sep 2026 09:00:00 GMT How fluent text goes wrong, what confidence actually measures, and which outputs a product must check in code. https://explaincourse.com/article-workflow-or-agent https://explaincourse.com/article-workflow-or-agent Sun, 13 Sep 2026 09:00:00 GMT How to choose between a fixed workflow, one model-chosen branch and a full agent loop, and where approval belongs.