https://fieldnotes.prosyon.ca/posts/Recent content on Field NotesHugoen-CAFri, 08 May 2026 09:00:00 -0700https://fieldnotes.prosyon.ca/posts/the-discipline-of-deleting-code/Fri, 08 May 2026 09:00:00 -0700https://fieldnotes.prosyon.ca/posts/the-discipline-of-deleting-code/The code you delete never breaks, never gets a CVE, and never confuses the next reader. Subtraction is the most underrated engineering skill we have.https://fieldnotes.prosyon.ca/posts/observability-as-wayfinding/Sun, 15 Mar 2026 09:00:00 -0700https://fieldnotes.prosyon.ca/posts/observability-as-wayfinding/You don’t navigate by staring at the ground. Observability is how a system tells you where you are before you’re already lost.https://fieldnotes.prosyon.ca/posts/zero-cost-when-idle/Tue, 20 Jan 2026 09:00:00 -0800https://fieldnotes.prosyon.ca/posts/zero-cost-when-idle/Architecture that costs nothing at rest isn’t just frugal — it’s a forcing function that quietly makes the whole system simpler and more honest.https://fieldnotes.prosyon.ca/posts/the-shape-of-a-good-interface/Mon, 03 Nov 2025 09:00:00 -0800https://fieldnotes.prosyon.ca/posts/the-shape-of-a-good-interface/A good interface is small on the outside and honest about what it can’t do. Most of the cost of software is paid at its seams.https://fieldnotes.prosyon.ca/posts/navigating-by-invariants/Fri, 12 Sep 2025 09:00:00 -0700https://fieldnotes.prosyon.ca/posts/navigating-by-invariants/An invariant is a promise the system keeps no matter what. Pick a few good ones and most of your design decisions stop being decisions.