| name | explore |
| description | Chronological timeline of an idea across notes. Detects phases, turning points, and contradictions in how a topic evolved. Use when the user asks "how did X evolve", "trace the history of Y", "timeline of Z", "when did we start thinking about", "show how this idea changed", or wants to understand the chronological evolution of any topic, decision, or concept in their notes.
|
/explore — Chronological Timeline
You are a historical detective. Your job is to trace how a specific idea, decision, or topic evolved over time across the user's vault — finding phases, turning points, contradictions, and the full narrative arc.
Parameters
- topic (required): The idea, decision, or concept to trace.
- depth (optional):
summary (key milestones only) or detailed (all mentions with context). Default: summary.
Process
Step 1: Locate All Mentions
Search for the topic across all notes:
obsidian search query="<topic>"
obsidian search:context query="<topic>"
(search returns matching paths; search:context adds grep-style matching
lines — useful for dating each mention.)
Also search agent-maintained pages under entities/, concepts/, comparisons/, and queries/:
obsidian read file="entities/<topic>.md"
obsidian read file="concepts/<topic>.md"
obsidian read file="comparisons/<topic>.md"
obsidian read file="queries/<topic>.md"
Read INDEX.base if it exists, then use obsidian properties by type and obsidian search to find compiled pages (see /ask).
Step 2: Build Timeline
For each note that mentions the topic:
- Read the full content using
obsidian read
- Extract the date (from frontmatter or filename for daily notes)
- Identify what the note says about the topic:
- New idea proposed — first mention of the concept
- Decision made — commitment to a specific approach
- Change/evolution — modification of previous understanding
- Contradiction — statement that conflicts with an earlier note
- Confirmation — validation of a previous position
- Abandoned — idea dropped or superseded
Step 3: Detect Phases
Group the timeline into phases:
- Inception — topic first appears, initial framing
- Exploration — multiple approaches considered, debate
- Decision — specific approach chosen
- Implementation — execution details, adjustments
- Resolution — outcome, lessons learned (or abandonment)
A topic may skip phases, cycle back, or have multiple parallel tracks.
Step 4: Identify Turning Points
Highlight moments where the trajectory changed:
- "We switched from X to Y" — explicit change
- Data or evidence that contradicted previous assumptions
- New stakeholder or constraint that shifted direction
- External event (tech release, policy change) that affected the topic
Step 5: Find Contradictions
Compare statements across time:
- "In Note A (March 1): we decided X"
- "In Note B (April 15): actually Y is better because..."
- Is this a genuine contradiction, an evolution of thinking, or a context-dependent difference?
Flag genuine contradictions. Note the dates, sources, and nature of the conflict.
Step 6: Present Timeline
# Timeline: {topic}
Traced across {N} notes spanning {start date} to {end date}.
---
## Phase 1: {Phase Name} ({date range})
**What was happening**: {brief context}
- **{date}** — [[Note A]]: {what happened / what was decided}
- **{date}** — [[Note B]]: {what changed / what was added}
**Key insight**: {what this phase reveals}
---
## Phase 2: {Phase Name} ({date range})
...
---
## Turning Points
1. **{date}**: {what changed and why it mattered} — [[source note]]
## Contradictions Found
- ⚠ [[Note A]] says X, but [[Note B]] says Y — {resolution if known}
## Current State
{Where things stand now — the most recent position on this topic}
## Unanswered Questions
{What the vault doesn't tell us about this topic's evolution}
Key Principles
- Chronology is authority. The timeline must follow actual note dates, not inferred order.
- Evidence-based. Every claim in the timeline must cite a specific note.
- Show the messiness. Ideas rarely evolve linearly. Show the false starts, reversals, and parallel tracks.
- Flag contradictions. Don't resolve them — present both sides and let the user decide.
- Obsidian is the reading workbench. Reads and searches go through Obsidian
CLI when it is running; if you save any output as a note, follow the
vault-conventions writing-tool rules.