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Derek Antony Parfit FBA (/ ˈ p ɑːr f ɪ t /; 11 December 1942 – 2 January 2017 [3] [4]) was a British philosopher who specialised in personal identity, rationality, and ethics. He is widely considered one of the most important and influential moral philosophers of the late 20th and early 21st centuries.
The problem was described and explored by Derek Parfit in his 1987 book Reasons and Persons. [2] It is a challenge to person-affecting views, which are based on the intuition that "what is bad must be bad for someone". [3] An example proposed by Parfit involves thinking of two policies: "conservation" and "depletion".
According to Parfit, it is rational for people who perceive very little connectedness with their future self to act in ways that neglect the future self (e.g., by smoking). The psychological work that followed did not similarly argue for Parfit's normative view but has instead attempted to test the descriptive validity of Parfit's theory. [6]
Reasons and Persons is a 1984 book by the philosopher Derek Parfit, in which the author discusses ethics, rationality and personal identity.. It is divided into four parts, dedicated to self-defeating theories, rationality and time, personal identity and responsibility toward future generations.
The teletransportation paradox or teletransport paradox (also known in alternative forms as the duplicates paradox) is a thought experiment on the philosophy of identity that challenges common intuitions on the nature of self and consciousness, formulated by Derek Parfit in his 1984 book Reasons and Persons. [1]
The mere addition paradox (also known as the repugnant conclusion) is a problem in ethics identified by Derek Parfit and discussed in his book Reasons and Persons (1984). The paradox identifies the mutual incompatibility of four intuitively compelling assertions about the relative value of populations.
The economist Tyler Cowen has expressed admiration for Parfit's style ("Reading him is an unforgettable and illuminating experience") in On What Matters, but argues: . I see the biggest and most central part of the book as a failure, possibly wrong but more worryingly "not even wrong" and simply missing the questions defined by where the frontier – choice theory and not just philosophic ...
Quizlet made its first acquisition in March 2021, with the purchase of Slader, which offered detailed explanations of textbook concepts and practice problems, and eventually incorporated it into its paid platform, Quizlet Plus. [20] [21] [22] In November 2022, Quizlet announced a new CEO, Lex Bayer, the former CEO of Starship Technologies. [23]