3 AM. You're staring at your AI agent architecture, debugging why the planner keeps hallucinating tool calls. The logs show the model knows it should invoke get_user_history, but the execution path forks into a decision tree that looks suspiciously like... Prolog?
You're not imagining it. That architecture you're building in LangChain or AutoGen? It's a ghost. Japan tried to build this exact thing in 1982, and nobody told you.
I spent three weeks researching Japan's Fifth Generation Computer Project (FGCS) for work on an AI agent framework, and what I found rewired how I think about every "revolutionary" AI pattern landing on Hacker News right now.
The Project That Should Have Changed Everything
In 1982, Japan's Ministry of International Trade and Industry (MITI) announced the FGCS: a ten-year, $400 million project to build a computer that would reason like a human. Not through programming, but through logic. They chose Prolog as the foundation language — a decision that looks prescient now and looked insane then.
