"The World Unclaimed" argues that Heidegger's critique of modern epistemology in "Being and Time" is seriously flawed. Heidegger believes he has done away with epistemological problems concerning the external world by showing that the world is an existential structure of Dasein. However, the author argues that Heidegger fails to make good his claim that he has rescued the phenomenon of the world, which he believes the tradition of philosophy has bypassed. Heidegger fails not only to reclaim the world but also to acknowledge its loss. Alweiss thus calls into question Heidegger's claim that...