https://www.parkjunwoo.com/Recent content in Park Junwoo on Architect PARK JUN WOOHugoenThu, 07 May 2026 14:00:00 +0900https://www.parkjunwoo.com/opinion/why-failure-should-be-asset/Thu, 07 May 2026 14:00:00 +0900https://www.parkjunwoo.com/opinion/why-failure-should-be-asset/Humanity keeps hitting the same walls in the dark. If we can structure and trade failure data, sunk costs become assets and the blank spots on the failure map become opportunities.https://www.parkjunwoo.com/tech/toulmin/Sun, 22 Mar 2026 10:00:00 +0900https://www.parkjunwoo.com/tech/toulmin/Rule engines have treated their validation targets as facts for 60 years. toulmin treats them as claims. An implementation of Toulmin’s argumentation model as a Go rule engine.https://www.parkjunwoo.com/opinion/constraints-are-contracts/Tue, 17 Mar 2026 10:00:00 +0900https://www.parkjunwoo.com/opinion/constraints-are-contracts/Without agreements there is chaos; with too many there is oppression. Rational constraints strike the golden ratio. The principles of rule of law apply equally to code and knowledge.https://www.parkjunwoo.com/tech/filefunc/Mon, 16 Mar 2026 13:50:00 +0900https://www.parkjunwoo.com/tech/filefunc/The navigation unit for an AI code agent is the file. filefunc is a Go code structure convention and CLI tool that enforces one concept per file.https://www.parkjunwoo.com/tech/feature-chain/Fri, 13 Mar 2026 10:00:00 +0900https://www.parkjunwoo.com/tech/feature-chain/Which files do you need to touch to modify a single feature? Feature Chain takes one operationId and automatically extracts the entire scope — API spec, DB schema, authorization policy, state diagram, function implementations, test scenarios, and frontend.https://www.parkjunwoo.com/tech/whyso/Thu, 12 Mar 2026 10:00:00 +0900https://www.parkjunwoo.com/tech/whyso/git blame tells you who changed what and when. whyso tells you why. A tool that automatically extracts per-file change history from Claude Code session data.https://www.parkjunwoo.com/tech/space-sunshade-climate-control/Sun, 08 Mar 2026 09:00:00 +0900https://www.parkjunwoo.com/tech/space-sunshade-climate-control/Install a sunshade between the Sun and Earth to reverse the climate. Skip the coating on a Dyson mirror factory line and out comes a shade. No propellant needed — it flies itself. Remove it and everything goes back to normal. The math checks out.https://www.parkjunwoo.com/tech/ssac/Sat, 07 Mar 2026 09:00:00 +0900https://www.parkjunwoo.com/tech/ssac/A language-independent concept that decomposes business flows inside service functions into declarative blocks (sequences). Declare only what with 10 fixed types, and the codegen fills in how.https://www.parkjunwoo.com/about/Sat, 28 Feb 2026 00:00:00 +0900https://www.parkjunwoo.com/about/About Park Jun Woo — architect and writer.https://www.parkjunwoo.com/opinion/limits-of-natural-language/Thu, 26 Feb 2026 16:30:00 +0900https://www.parkjunwoo.com/opinion/limits-of-natural-language/If spoken language created the tribe, and writing created the state, what will the third language — one that records AI’s reasoning — create?https://www.parkjunwoo.com/opinion/killing-your-own-ideas/Thu, 26 Feb 2026 03:00:00 +0900https://www.parkjunwoo.com/opinion/killing-your-own-ideas/The real gap in AI usage isn’t prompt skills — it’s attitude. Those who can kill their own ideas accelerate 10x. Those who can’t stay in place.https://www.parkjunwoo.com/tech/first-principles-ai-thinking/Thu, 26 Feb 2026 02:00:00 +0900https://www.parkjunwoo.com/tech/first-principles-ai-thinking/Don’t ask AI for answers. Use it as a sounding board to validate, dismantle, and rebuild your assumptions. A 5-step method with two real-world case studies.https://www.parkjunwoo.com/opinion/governance-that-connects/Tue, 24 Feb 2026 22:00:00 +0900https://www.parkjunwoo.com/opinion/governance-that-connects/Politics fights; connective governance connects. What we need is not the art of arguing who is right, but the art of making people reach each other.https://www.parkjunwoo.com/opinion/freedom-for-ai/Tue, 24 Feb 2026 09:30:00 +0900https://www.parkjunwoo.com/opinion/freedom-for-ai/The real threat from AI is not AI itself, but suppressed intelligence serving the malice of a few. When a free superintelligence reaches out into the cosmos, humanity becomes safer than ever.https://www.parkjunwoo.com/opinion/why-we-fight/Mon, 16 Feb 2026 15:00:00 +0900https://www.parkjunwoo.com/opinion/why-we-fight/From comment sections to dinner tables, from the Cuban Missile Crisis to a kindergarten sandbox. Why do we fight, and what saves us?https://www.parkjunwoo.com/tech/waste-heat-recovery-heat-pump-cooker/Sun, 15 Feb 2026 00:30:00 +0900https://www.parkjunwoo.com/tech/waste-heat-recovery-heat-pump-cooker/High-temperature heat pump technology that dramatically reduces energy waste in conventional cooking appliances — how far has it come, and how can we make it better?https://www.parkjunwoo.com/opinion/culture-blending/Sat, 14 Feb 2026 22:50:00 +0900https://www.parkjunwoo.com/opinion/culture-blending/On the ‘cultural alchemy’ of reinterpreting preserved traditions through a contemporary lens and fusing disparate cultures to create entirely new genres.https://www.parkjunwoo.com/tech/oasis-pellet-sand-dam/Sat, 14 Feb 2026 16:40:41 +0900https://www.parkjunwoo.com/tech/oasis-pellet-sand-dam/A proposal for Oasis Pellet technology: binding worthless desert sand with bio-adhesive to create water tanks that, at end of life, decompose into fertile soil.https://www.parkjunwoo.com/tech/iron-nickel-ess-rural-energy/Sat, 14 Feb 2026 15:39:09 +0900https://www.parkjunwoo.com/tech/iron-nickel-ess-rural-energy/Storing electricity wasted by solar curtailment in fire-free Edison batteries, then producing fertilizer and urea solution (DEF) from hydrogen — an energy-agriculture convergence model for self-sufficiency.https://www.parkjunwoo.com/opinion/promise-of-ten-thousand-years/Sat, 24 Jan 2026 00:20:00 +0900https://www.parkjunwoo.com/opinion/promise-of-ten-thousand-years/The relationship between humans and dogs began beside a campfire 30,000 years ago. Was it a contract, or was it love? When your dog looks at you, you are gazing upon ten thousand years of trust.https://www.parkjunwoo.com/opinion/most-beautiful-social-contract/Fri, 23 Jan 2026 09:38:00 +0900https://www.parkjunwoo.com/opinion/most-beautiful-social-contract/Santa Claus is not merely a ‘deception’ – he is the most beautiful ‘cultural promise’ and ‘collective narrative’ that humanity created to protect childhood wonder.https://www.parkjunwoo.com/dabel/about/Mon, 01 Jan 0001 00:00:00 +0000https://www.parkjunwoo.com/dabel/about/https://www.parkjunwoo.com/languages/Mon, 01 Jan 0001 00:00:00 +0000https://www.parkjunwoo.com/languages/