Second Brain Changed My Mind Agent Skill

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

• Find superseded claims across concept pages, and contradictions where the

sources differ in date.

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

changed it, when.

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

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

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

actionable output here.

• 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.