Is Your Model’s Accuracy Real, or Did It Just Get Lucky?

The Feynman Test for Not Fooling Yourself About Test-Set Accuracy “The first principle is that you must not fool yourself — and you are the easiest person to fool.” — Richard Feynman I keep Feynman’s line taped, metaphorically, to the inside of every model I train. Because here is the uncomfortable truth about that beautiful …

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AI Agent Architecture: From Harness to Self-Evolution

Diagram of AI agent architecture showing the model wrapped by a harness, loops, and self-evolving layers

Let me start with a confession that should worry you slightly. The large language model at the heart of every “AI agent” you’ve read about is, on its own, utterly helpless. It cannot remember what it did five minutes ago, press a button, read a file, run a test, or check whether its own brilliant …

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Why “Act As An Expert” Prompts Make AI Dumber | 2026 Guide

In 1974, the legendary physicist Richard Feynman stood before the graduating class at Caltech and told them a story about the South Sea islanders. During World War II, these islanders had watched magnificent flying machines descend from the sky, bringing with them endless supplies of cargo. When the war ended and the planes stopped coming, …

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