Dev builds an interpreter for an English logic language so an LLM can reason via proof search

narphorium · x · 2026-09-19

The author argues that "Jev" (his LLM) can't reason, so he built an interpreter that reasons for it: a logic language where facts and rules are written in plain English.

The interpreter runs ordinary proof search in code, so the reasoning process is deterministic and only the model is consulted when needed — sidestepping unreliable in-model reasoning.

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