Compiled Truth + Timeline Pattern
Goal
Every brain page has two zones: compiled truth (current synthesis, rewritten as evidence changes) and timeline (append-only evidence trail, never edited).What the User Gets
Without this: brain pages are append-only logs. To understand a person, you read 200 timeline entries. The answer is buried in entry #147. With this: the compiled truth gives you the state of play in 30 seconds. The timeline is the proof. Six months of entries compress into a one-paragraph assessment that’s always current.Implementation
Page Structure
Updating a Page
The Rules
Every compiled truth claim must trace to timeline entries. If the Assessment
says “under-appreciated internally,” there should be timeline entries that
support that claim.
Tricky Spots
- REWRITE means rewrite, not append. Don’t add a new paragraph to compiled truth. Rewrite the entire section with the new information integrated. Old assessments that are no longer accurate should be updated, not kept alongside contradictory new ones.
-
Timeline entries are immutable. Never edit a timeline entry. If information
turns out to be wrong, add a NEW entry correcting it:
- 2026-04-10 | Correction: Sarah is VP Eng, not CTO. Previous entry was wrong. -
ModusBrain search weights compiled truth higher.
modusbrain queryreturns compiled truth chunks with higher relevance than timeline chunks. This means the freshest synthesis surfaces first in search results. -
The --- separator matters. ModusBrain uses the first standalone
---after frontmatter to split compiled_truth from timeline. Everything above is compiled truth, everything below is timeline. - Don’t skip the Assessment section. The assessment is the value. “Strong technical leader” is something no API can provide. It’s YOUR read on this person. That’s what makes the brain page better than LinkedIn.
How to Verify
- Update a person page. Add new meeting info. Check: compiled truth was REWRITTEN (not appended), timeline has new entry at the top.
- Search for the person.
modusbrain query "Sarah Chen". The compiled truth (current synthesis) should appear first, not a random timeline entry. - Check traceability. Every claim in compiled truth should have a corresponding timeline entry. Read both sections and verify.
- Check immutability. After update, old timeline entries should be unchanged. Dates, sources, and content should match the originals exactly.
Part of the ModusBrain Skillpack. See also: Source Attribution, Entity Detection