* AuthorTract: Getting across the author's political and philosophical opinions and presenting them in a way that makes the reader believe them is more or less the point of the book.
* FamilyUnfriendlyAesop: Some of Ishmael's teachings are these, though he implies that they're just 'unfriendly' to Taker culture. For example, if people are starving, it's better to let them starve and get the population back into sustainable limits. Cruel to that particular tribe, yes, but it means future generations will be living with enough food. Increasing food production -- no matter where on Earth -- won't eliminate starvation, since the population will increase in proportion and people will continue to starve.