Being and Time raises the problem of "authenticity," that is, the potentiality or otherwise for mortal "Dasein" to exist "fully" enough that it might actually understand being. Heidegger is clear throughout the book that nothing makes certain that "Dasein" is capable of this understanding. Finally, this question of the authenticity of individual "Dasein" cannot be separated from the "historicality" of "Dasein". On the one hand, "Dasein", as mortal, is "stretched along" between birth and death, and thrown into its world, that is, thrown into its "possibilities", possibilities which "Dasein" is charged with the task of assuming. On the other hand, "Dasein's" access to
John O'Neill (philosopher) John O'Neill (philosopher) John O'Neill is a philosopher. He is professor of Political Economy at the University of Manchester. John O'Neill held the post of professor of philosophy at Lancaster University. Previously, he was on the faculty of the University of Sussex and the University of Wales. Books Journal articles Mark Peacock wrote that in "The Market: Ethics, Knowledge and Politics" "O'Neill defends an Aristotelian perfectionism which allows for a plurality of goods pursued for their own sake...The argument is sound, but does not answer the liberal objection to Aristotle that individuals must be allowed to pursue "what they believe