> ## Content Index
> Fetch the complete content index at: https://oeconomics.app/llms.txt
> Use this file to discover other available public pages before exploring further.

# Reuse what others have already modelled.
- URL: https://oeconomics.app/library/
- Published: 2026-10-14T10:02:00.000Z
- Updated: 2026-10-14T12:30:58.000Z
- Description: Public activities are searchable and readable by every signed-in user. A growing library of processes and supply chains you drop straight into your own model instead of rebuilding them.
- Author: Steven Eksteen
- Tags: Features, Reuse

- Point an input at an existing activity and its whole upstream chain, and its impact, comes with it.
- Every reuse pins the exact activity version, so results stay reproducible.
- Upstream data changing later never moves your numbers silently. You choose when to adopt a new version.