20 hours of insights in 20 minutes
The main thrust of Political Tribes is that group identities based on things like ethnicity, religion and skin color are very important but the US has often failed to recognise this in its foreign policy.
The Zettelkasten note-taking method involves taking lots of short notes containing only one idea. The notes can then be linked to other notes.
Ahrens’ book is about the Zettelkasten note-taking method developed by Niklas Luhmann. A lot of time is spent explaining the benefits of this method.