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The original position(OP) is a hypothetical situation developed by an American philosopher John Rawls as a thought experiment to replace the imagery of a savage state of nature of prior political philosophers like Thomas Hobbes. In the original position, the parties select principles that will determine the basic structure of the society they will live in. This choice is made from behind a veil of ignorance, which would deprive participants of information about their particular characteristics: his or her ethnicity, social status, gender and, crucially, Conception of the Good (an individual's idea of how to lead a good life). This forces participants to select principles impartially and rationally. In social contract theory, persons in the state of nature agree to the provisions of a contract that defines the basic rights and duties of citizens in a civil society. In Rawls's theory, ''Justice as Fairness'', the original position plays the role that the state of nature does in the classical social contract tradition of Hobbes, Jean-Jacques Rousseau, and John Locke. The original position figures prominently in his 1971 book, ''A Theory of Justice''. It has influenced a variety of thinkers from a broad spectrum of philosophical orientations. As a thought experiment, the original position is a hypothetical position designed to accurately reflect what principles of justice would be manifest in a society premised on free and fair cooperation between citizens, including respect for liberty, and an interest in reciprocity.〔John Rawls, ''A Theory of Justice,'' Cambridge, Massachusetts: Belknap Press, 1971. ISBN 0-674-00078-1〕〔John Rawls, ''Justice as Fairness: A Restatement,'' Cambridge, Massachusetts: Belknap Press, 2001.〕 In the state of nature, it might be argued that certain persons (the strong and talented) would be able to coerce others (the weak and disabled) by virtue of the fact that the stronger and more talented would fare better in the state of nature. This coercion is sometimes thought to invalidate any contractual arrangement occurring in the state of nature. In the original position, however, representatives of citizens are placed behind a "veil of ignorance", depriving the representatives of information about the individuating characteristics of the citizens they represent. Thus, the representative parties would be unaware of the talents and abilities, ethnicity and gender, religion or belief system of the citizens they represent. As a result, they lack the information with which to threaten their fellows and thus invalidate the social contract they are attempting to agree to. ==Nature of the concept== Rawls specifies that the parties in the original position are concerned only with citizens' share of what he calls ''primary social goods'', which include basic rights as well as economic and social advantages. Rawls also argues that the representatives in the original position would adopt the ''maximin rule'' as their principle for evaluating the choices before them. Borrowed from game theory, maximin stands for maximizing the minimum, i.e., making the choice that produces the highest payoff for the least advantaged position. Thus, maximin in the original position represents a formulation of ''social equality''. In the social contract, citizens in a state of nature contract with each other to establish a state of civil society. For example, in the Lockean state of nature, the parties agree to establish a civil society in which the government has limited powers and the duty to protect the persons and property of citizens. In the original position, the representative parties select principles of justice that are to govern the basic structure of society. Rawls argues that the representative parties in the original position would select two principles of justice: # Each citizen is guaranteed a fully adequate scheme of basic liberties, which is compatible with the same scheme of liberties for all others; # Social and economic inequalities must satisfy two conditions: # * to the greatest benefit of the least advantaged (the difference principle); # * attached to positions and offices open to all. The reason that the least well off member gets benefited is that it is assumed that under the veil of ignorance, under original position, people will be risk averse. This implies that everyone is afraid of being part of the poor members of society, so the social contract is constructed to help the least well off members. Recently, Thomas Nagel has elaborated on the concept of original position, arguing that social ethics should be built taking into account the tension between original and actual positions. Recently, the original position has been modelled mathematically along Wright-Fisher's diffusion, classical in population genetics.〔Mostapha Benhenda (A model of deliberation based on Rawls’s political liberalism ) Soc Choice Welf (2011) 36: 121–178〕 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「Original position」の詳細全文を読む スポンサード リンク
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