Fire engineer turned product manager. Writing about software, AI, running, and the tools I build.https://machielreyneke.com/https://machielreyneke.com/blog/circle-packing-nuclear-strategy/https://machielreyneke.com/blog/circle-packing-nuclear-strategy/The numbers don't add up. But I've been preparing anyway.Mon, 13 Apr 2026 00:00:00 GMThttps://machielreyneke.com/blog/our-real-plan/https://machielreyneke.com/blog/our-real-plan/A field guide for the newly liberated.Fri, 10 Apr 2026 00:00:00 GMThttps://machielreyneke.com/blog/big-boys/https://machielreyneke.com/blog/big-boys/A poem about fatherhood, time, and what matters.Fri, 20 Mar 2026 00:00:00 GMThttps://machielreyneke.com/blog/ambitions/https://machielreyneke.com/blog/ambitions/A poem about the corporate climb.Wed, 18 Mar 2026 00:00:00 GMThttps://machielreyneke.com/blog/a-serenity-prayer/https://machielreyneke.com/blog/a-serenity-prayer/For those in power.Fri, 06 Mar 2026 00:00:00 GMThttps://machielreyneke.com/blog/persuasion/https://machielreyneke.com/blog/persuasion/On breakfast, engagement rings, and regime change.Sat, 28 Feb 2026 00:00:00 GMThttps://machielreyneke.com/blog/bullish-on-ai-bearish-on-everything-else/https://machielreyneke.com/blog/bullish-on-ai-bearish-on-everything-else/AI might displace knowledge workers faster than the economy can absorb. Here's how I'm thinking about the deflation story, the policy response, and portfolio positioning.Mon, 23 Feb 2026 00:00:00 GMThttps://machielreyneke.com/blog/cholesterol/https://machielreyneke.com/blog/cholesterol/My LDL is high. My doctors want me on statins. But when you actually look at the full picture - Lp(a), triglycerides, insulin, inflammation - the story changes completely.Fri, 20 Feb 2026 00:00:00 GMThttps://machielreyneke.com/blog/feed/https://machielreyneke.com/blog/feed/A poem from the algorithm's perspective.Fri, 20 Feb 2026 00:00:00 GMThttps://machielreyneke.com/blog/metastability-of-secrets/https://machielreyneke.com/blog/metastability-of-secrets/In physics, a metastable system looks perfectly stable - until it isn't. The Epstein network held for thirty years. Then someone tried to stabilise it.Thu, 19 Feb 2026 00:00:00 GMThttps://machielreyneke.com/blog/vampires-longevity/https://machielreyneke.com/blog/vampires-longevity/The modern longevity movement's obsession with blood transfusions makes perfect sense — if you accept that Peter Thiel and Bryan Johnson are vampires.Mon, 09 Feb 2026 00:00:00 GMThttps://machielreyneke.com/blog/longevity-lessons/https://machielreyneke.com/blog/longevity-lessons/I went looking for the common threads among history's most prominent longevity figures. What habits, principles, and practices unite them? Quite a lot, it turns out.Sat, 07 Feb 2026 00:00:00 GMThttps://machielreyneke.com/blog/1857/https://machielreyneke.com/blog/1857/I had an AI coach, a custom analytics app, and six weeks of heart rate data. The thing that actually mattered was deciding not to stop.Mon, 02 Feb 2026 00:00:00 GMThttps://machielreyneke.com/blog/ai-slop-is-a-setup-problem/https://machielreyneke.com/blog/ai-slop-is-a-setup-problem/The difference between useful AI and generic mush isn't the model. It's everything you haven't told it.Mon, 26 Jan 2026 00:00:00 GMThttps://machielreyneke.com/blog/tyranny-of-the-available/https://machielreyneke.com/blog/tyranny-of-the-available/You are not the captain of your ship. You are a chess player who gets to set up the board before the game.Thu, 22 Jan 2026 00:00:00 GMThttps://machielreyneke.com/blog/slate/https://machielreyneke.com/blog/slate/I built Slate knowing Claude would be using it too. Six days of data shows two interfaces, two jobs.Sun, 18 Jan 2026 00:00:00 GMThttps://machielreyneke.com/blog/breaking-the-feed/https://machielreyneke.com/blog/breaking-the-feed/How two hours of clicking 'Not interested' changed what I build.Sat, 17 Jan 2026 00:00:00 GMT