DeepSeek model catches its own backup mistake, says "oops," and invents a lateral fix

EffectiveMedium2683 · reddit · 2026-10-20

A Reddit user shares a screenshot of a DeepSeek model mid-run: after editing test files, it recalls its "Rule 1: backup before modifying," realizes it already modified them without backing up, says "oops," and applies lateral thinking — creating .bak files from git HEAD (the pre-change state) to satisfy the backup constraint after the fact.

The poster marvels that the behavior feels "unnervingly more than an automaton," attributing it to reinforcement-learning emergent behavior, and invites others to share similar moments.

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