Michael Malice‘s book The Anarchist Handbook is a collection of essays from anarchists of many varieties, each introduced by the author. Ancaps looking at the rest of the present-day anarchist movement might conclude that there is nothing to learn. However, it is instructive to see how close the idols of other anarchist philosophies came to libertarianism, and how their errors led to things like anarcho-socialism, anarcho-communism, and the like.