The Permis are an internal exchange currency which enabled the creation of this great learning resource for EcoEconomics.
The Integral PermaCulture Academy (creator of the Permis currency) accepts up to 60% of the costs of its courses in work exchanges that are accounted by in Permis.
We pay in Permis for a variety of support work, administration, or investigation that help improve the services offered by the Academy.
For example editing the e-book, doing translations, helping with conferenes that we offer periodically, improving the classes, supporting other students with additional tutorials, creating more free MiniCourses, etc.
It is with this funding (and lots of additional voluntary work) that these resources have been co-created (like this EcoEconomy wiki) so that everyone can be informed about the most advanced and emerging in sustainability science.