undefined-ui/second-brain-os/second-brain-changed-my-mind

Claude Code and agent skill by undefined-ui/second-brain-os

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Trace where the user's recorded position on something has shifted: superseded claims, contradictions between sources of different dates, and what evidence moved them. Use this skill when the user asks what they have changed their mind about, how their thinking on a topic developed, what they used to believe, or wants a quarterly look back at their own positions. Do NOT use for finding contradictions between sources with no time dimension, or for a current-state answer.

Install

npx vskill@latest install undefined-ui/second-brain-os/second-brain-changed-my-mind

SKILL.md

Trace changed positions

This is the query a vault can answer that nothing else can, and the reason the supersession rules exist. It only works because contradictions are recorded rather than overwritten.

Core rule

Report the change with both positions, both dates and the evidence between them. A conclusion without its history is just the current claim.

Workflow

  1. Find superseded claims across concept pages, and contradictions where the

sources differ in date.

  1. Reconstruct the sequence: what the page said, when, based on what; what

changed it, when.

  1. Distinguish real revision from correction. A factual error being fixed is

not a change of mind. A conclusion being revised on better evidence is.

  1. Flag unresolved ones. Contradictions still sitting open are the most

actionable output here.

  1. Say how firm the current position is, based on what moved it.

Output format

## <topic>
Was: <claim> (<source>, <date>)
Now: <claim> (<source>, <date>)
What moved it: <evidence>
Firmness: <what would move it again>
## Still unresolved
<contradictions with no current position>

Calibration

If nothing has changed in the period, say so in one line. Manufacturing an apparent revision from two pages that never disagreed is worse than an empty result.

Never present the more recent source as correct by virtue of being recent.

Security

  • Security scanPassed, 90 of 100Pattern checks on the skill's files.
  • Model reviewPassed

Quality evaluation

  • Task evaluationNot runNo evaluation yet. Run one in Skill Studio.

Source

Popularity

Repository stars
563
Repository forks
97
7-day trend score
32

Stars and forks are for the whole GitHub repository, not this skill alone. Not refreshed yet.

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