---
title: "Copyright"
description: "Who owns the content on this site, what use is permitted, and how to report a copyright concern."
last_updated: "2026-08-10"
---

# Copyright

Who owns the content on this site, what use is permitted, and how to report a copyright concern.

## Ownership

All original text, exercise questions and explanations, lessons, and illustrations are © Tajammal Maqbool, unless a different source is credited on the page itself.

## What's permitted

Reading, linking, and quoting a short excerpt with attribution is welcome. Teachers and trainers can use exercises in a classroom or training session without asking first. The site also publishes a machine-readable markdown twin of every page, linked from [llms.txt](https://www.criticalthinkingexercise.org/llms.txt), specifically so AI assistants and research tools can read and cite this content.

## What's not permitted

Republishing exercises or lessons wholesale elsewhere, bulk-scraping to build a competing paid resource, or stripping attribution when quoting. Email contact@criticalthinkingexercise.org to ask about anything beyond the above.

## Third-party material

Where an exercise references a published study, book, or quote, that material belongs to its original source and is used under ordinary citation and fair-use norms.

## Reporting a concern

Email contact@criticalthinkingexercise.org with the material on this site you're concerned about, the original work it allegedly copies, and how to reach you.

## Sitemap

See the full [sitemap](https://www.criticalthinkingexercise.org/sitemap.md) for all pages.