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In epistemology, phenomenal conservatism (PC) holds that it is reasonable to assume that things are as they appear, except when there are positive grounds for doubting this. (The term derives from the Greek word "phainomenon", meaning "appearance".) The principle was initially defended in Huemer 2001, where it was formulated as follows: *If it seems to ''S'' as if ''p'', then ''S'' thereby has at least ''prima facie'' justification for believing that ''p''. A later formulation, designed to allow the principle to encompass inferential as well as foundational justification, reads as follows. *If it seems to ''S'' that ''p'', then, in the absence of defeaters, ''S'' thereby has at least some degree of justification for believing that ''p''. == Arguments for PC == Phenomenal Conservatism has been defended on three grounds. #First, the principle enables one to account for the justification of most, perhaps all, of the beliefs that we commonly take as justified, including sensory observations, memory beliefs, and beliefs based on reasoning. #Second, it is argued that alternative epistemological positions are self-defeating in the sense that, unless PC is true, few or no beliefs would be justified, including beliefs in any alternative epistemological theories. This is supported by the claims # *that all or nearly all beliefs are causally explained by appearances, that is, one believes a proposition because it seems true to one; and # *that a belief is justified only if it is causally explained by a factor that constitutes justification for the proposition believed. #Third, it is argued that PC is most faithful to the motivations underlying epistemological internalism. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Phenomenal conservatism」の詳細全文を読む スポンサード リンク
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