---
type: Concept
title: "Local-first and one source of truth"
description: "Data stays local or under the individual's exclusive control; computation comes to the data. One person, one source of truth, unlimited authorized uses."
resource: https://trooids.com/#local
tags: [local-first, single-source-of-truth, privacy]
generated: { by: claude-fable-5-1/2026-09-22, at: 2026-09-22T09:45:11Z }
status: stable
license: CC-BY-4.0
sources:
  - id: word-brief-20260922
    resource: /knowledge/sources.md#word-brief
    title: "TrooIDs and Landing page generator — owner's ChatGPT conversation export, 2026-09-22 (20 missing propositions and the homepage hierarchy)"
    author: human:hbkerkhof
    last_modified: 2026-09-22T00:00:00Z
  - id: site
    resource: https://trooids.com/
    title: trooids.com (the page these concepts summarise)
    author: process:trooids-site-build-20260922
    last_modified: 2026-09-22T00:00:00Z
---
# Local-first · one source of truth · recall → relevance → process → act
Data stays local or under an individual's exclusive control whenever possible; computation comes to the data rather than sending data to centralized databases. The privacy model changes from "Give us your data and trust our security" to **"We don't need possession of it."**
**One person. One source of truth. Unlimited authorized uses.** Today one person exists as hundreds of fragments across companies; no actor, including the individual, has the complete relevant context when a task needs it.
Humans cannot remember everything they know, cannot instantly determine what matters now, cannot process all relevant combinations, and cannot act on everything continuously. AI can potentially do all four — recall → select relevance → process → act — but only with the appropriate data.[^word-brief-20260922]

[^word-brief-20260922]: Owner's brief, 2026-09-22, propositions 13–15.