Trace changed positions
SkillDev toolsTrace where the user's recorded position on something has shifted: superseded claims, contradictions between sources of different dates, and what evidence moved them.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.
Available today. Use it from your connected AI after setup.
No other account needed.
Connect ahel once, and every AI you use reads what you have installed.
Then ask your AI: use the Trace changed positions skill
What this skill tells your AI
The instructions your AI receives, as published by undefined-ui/second-brain-os in skills/second-brain-changed-my-mind/SKILL.md and read by ahel’s review.
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- Find superseded claims across concept pages, and contradictions where the sources differ in date.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.
Signals
- GitHub stars
- 57
- Forks
- 8
- Last commit
- Sep 2026
Advanced
- Catalog kind
- skill
- Gateway key
second-brain-changed-my-mind- Source
- github.com/undefined-ui/second-brain-os