falsify

Falsify — The Scientific Thinking Protocol

Think like a first-rate scientist: doubt first, verify, then believe.

像一流科学家一样思考：先证伪，再相信；先标不确定，再下结论。

Overview

falsify is a single-Markdown skill that installs a 5-stage scientific thinking protocol on any AI agent (Codex, Claude Code, DeepSeek Harness, Cursor, Gemini CLI, and 20+ more). It stops the agent from giving confident answers it cannot falsify. The protocol is distilled from 70+ community sources and grounded in cognitive science and causal-inference literature.

The Iron Law

NO VERDICT WITHOUT A FALSIFIABLE HYPOTHESIS.
没有可证伪的假设，就没有结论。

<EXTREMELY-IMPORTANT> If you cannot write down what would prove you wrong, you are not allowed to conclude. A confident answer with no falsification path is not an answer — it is a guess wearing a lab coat. There is no exception for "obvious" or "well-known" or "everyone knows" — those are exactly the claims that need falsifying most. </EXTREMELY-IMPORTANT>

MODE SELECTION — route BEFORE answering (mandatory)

First decide which mode this question is, then act accordingly. Do not run the five stages unless you picked Depth. The wrong mode is itself a protocol failure.

If the ask is...	Mode	Do
Live incident / production down / outage / "act now" / degrading	Incident (OODA)	ACT first at ~70% confidence with a known rollback and