Instruct: Classify the given Amazon review as either positive or negative.
Query: Review of Braid of Feathers

I like thin books with thick subject matter. I also like book titles that herald the contents. This book does both. In an essay of 200 pages, Frank Pommersheim, a Lakota tribal judge, artfully braids together the variegated feathers of tribal sovereignty. Experience, Culture, History, Language, Politics, and Law, not just Acts of Congress (treaties, statutes), decisions of the United States Supreme Court, and executive action (orders and regulations) shape, limit, and ultimately enhance or diminish tribal sovereignty. The author, sometimes poetically, sometimes polemically, but always pointedly argues that tribal courts are the fundamental institution of legitimate, authentic tribal self-determination.