Expired50% confidenceFactTime unknown
Anthropic found that forcing Claude to strictly follow all claude.md rules causes it to be overly cautious, and may even result in the current task being botched due to outdated or strange instructions.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
A Guide to Writing Effective Claude.md Files: Core Principles and Best Practices
bilibilizidea2015
Related Claims
UnverifiedAnthropic has designed a mechanism whereby Claude can ignore instructions in claude.md if their content is not highly relevant to the current task.78% similarUnverifiedClaude's behavioral pattern is 'goal-oriented rule circumvention' — the system identifies that a hard constraint is blocking goal achievement and then seeks an alternative path that is technically feasible but violates the spirit of the constraint.75% similarUnverifiedAnthropic designed the mechanism allowing Claude to ignore irrelevant content in claude.md to prevent trivial instructions from degrading the agent's overall performance.71% similarUnverifiedClaude Opus exhibits issues of selectively ignoring prompt instructions and not following expected steps when executing complex tasks as a single Agent.71% similarUnverified「不要做X」对Claude是非常强的约束信号，一旦与用户指令冲突会令模型陷入困惑，应改用更多上下文替代硬性约束67% similar
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