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Nonidentity Problem
The nonidentity problem (also called the paradox of future individuals) is a problem in population ethics concerning actions that affect the existence, identity, or well-being of future people. It arises from the observation that even small changes can alter the timing and circumstances of child conception, leading to entirely different individuals coming into existence, similarly to the butterfly effect in chaos theory. Actions affecting future generations will thus not simply affect the welfare of individuals, but rather cause different individuals to come into existence. The problem was described and explored by Derek Parfit in his 1987 book ''Reasons and Persons''. It is a challenge to person-affecting views, which are based on the intuition that "what is bad must be bad for someone". An example proposed by Parfit involves thinking of two policies: "conservation" and "depletion". In the depletion strategy, current generations have a slightly higher quality of life, but unchec ...
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Population Ethics
Population ethics is the philosophical study of the ethical problems arising when our actions affect ''who'' is born and ''how many'' people are born in the future. An important area within population ethics is population axiology, which is "the study of the conditions under which one state of affairs is better than another, ''when the states of affairs in question may differ over the numbers and the identities of the persons who ever live''." Moral philosopher Derek Parfit brought population ethics to the attention of the academic community as a modern branch of moral philosophy in his seminal work '' Reasons and Persons'' in 1984. Discussions of population ethics are thus a relatively recent development in the history of philosophy. Formulating a satisfactory theory of population ethics is regarded as "notoriously difficult". While scholars have proposed and debated many different population ethical theories, no consensus in the academic community has emerged. Gustaf Arrhenius ...
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Butterfly Effect
In chaos theory, the butterfly effect is the sensitive dependence on initial conditions in which a small change in one state of a deterministic nonlinear system can result in large differences in a later state. The term is closely associated with the work of the mathematician and meteorologist Edward Norton Lorenz. He noted that the butterfly effect is derived from the example of the details of a tornado (the exact time of formation, the exact path taken) being influenced by minor perturbations such as a distant butterfly flapping its wings several weeks earlier. Lorenz originally used a seagull causing a storm but was persuaded to make it more poetic with the use of a butterfly and tornado by 1972. He discovered the effect when he observed runs of his weather model with initial condition data that were rounded in a seemingly inconsequential manner. He noted that the weather model would fail to reproduce the results of runs with the unrounded initial condition data. A very sma ...
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Chaos Theory
Chaos theory is an interdisciplinary area of Scientific method, scientific study and branch of mathematics. It focuses on underlying patterns and Deterministic system, deterministic Scientific law, laws of dynamical systems that are highly sensitive to initial conditions. These were once thought to have completely random states of disorder and irregularities. Chaos theory states that within the apparent randomness of chaotic complex systems, there are underlying patterns, interconnection, constant feedback loops, repetition, self-similarity, fractals and self-organization. The butterfly effect, an underlying principle of chaos, describes how a small change in one state of a deterministic nonlinear system can result in large differences in a later state (meaning there is sensitive dependence on initial conditions). A metaphor for this behavior is that a butterfly flapping its wings in Brazil can cause or prevent a tornado in Texas. Text was copied from this source, which is avai ...
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Derek Parfit
Derek Antony Parfit (; 11 December 1942 – 2 January 2017) 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. Parfit rose to prominence in 1971 with the publication of his first paper, "Personal Identity". His first book, ''Reasons and Persons'' (1984), has been described as the most significant work of moral philosophy since the 1800s. His second book, ''On What Matters'' (2011), was widely circulated and discussed for many years before its publication. For his entire academic career, Parfit worked at Oxford University, where he was an Emeritus Senior Research Fellow at All Souls College, Oxford, All Souls College at the time of his death. He was also a visiting professor of philosophy at Harvard University, New York University, and Rutgers University. He was awarded the 2014 Rolf Schock Prizes, Rolf Schock Prize ...
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Reasons And Persons
''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. Summary Self-defeating theories Part 1 argues that certain ethical theories are ''self-defeating''. One such theory is ethical egoism, which Parfit claims is 'collectively self-defeating' due to the prisoner's dilemma, though he does not believe this is sufficient grounds to reject the theory. Ultimately, Parfit does reject "common sense morality" on similar grounds. In this section, Parfit does not explicitly endorse a particular view; rather, he shows what the problems of different theories are. His only positive endorsement is of "impersonal ethics" – impersonality being the common denominator of the different parts of the book. Rationality and time Part 2 focuses on the rel ...
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Person-affecting View
A person-affecting or person-based view (also called person-affecting restriction) in population ethics captures the intuition that an act can only be bad if it is bad ''for'' someone. Similarly something can be good only if it is good ''for'' someone. Therefore, according to standard person-affecting views, there is no moral obligation to create people nor moral good in creating people because nonexistence means "there is never a person who could have benefited from being created". Whether one accepts person-affecting views greatly influences to what extent shaping the far future is important if there are more potential humans in the future. Person-affecting views are also important in considering human population control. A weaker form of person-affecting views states that an act can only be bad if it is bad for some existing or future person. Person-affecting views can be seen as a revision of total utilitarianism in which the "scope of the aggregation" is changed from all indi ...
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Utilitarianism
In ethical philosophy, utilitarianism is a family of normative ethical theories that prescribe actions that maximize happiness and well-being for the affected individuals. In other words, utilitarian ideas encourage actions that lead to the greatest good for the greatest number. Although different varieties of utilitarianism admit different characterizations, the basic idea that underpins them all is, in some sense, to maximize utility, which is often defined in terms of well-being or related concepts. For instance, Jeremy Bentham, the founder of utilitarianism, described ''utility'' as the capacity of actions or objects to produce benefits, such as pleasure, happiness, and good, or to prevent harm, such as pain and unhappiness, to those affected. Utilitarianism is a version of consequentialism, which states that the consequences of any action are the only standard of right and wrong. Unlike other forms of consequentialism, such as egoism and altruism, egalitarian util ...
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Repugnant Conclusion
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. Parfit’s original formulation of the repugnant conclusion is that "For any perfectly equal population with very high positive welfare, there is a population with very low positive welfare which is better, other things being equal." The paradox Parfit considers four populations, as depicted in the following diagram: A, A+, B− and B. Each bar represents a distinct group of people. The bars' width represents group size while the bar's height represents group happiness. Unlike A and B, A+ and B− are complex populations, each comprising two distinct groups of people. It is also stipulated that the lives of the members of each group are good enough that they would rather be ali ...
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Natalism
Natalism (also called pronatalism or the pro-birth position) is a policy paradigm or personal value that promotes the reproduction of human life as an important objective of humanity and therefore advocates a high birthrate. Cf.: According to the Merriam-Webster dictionary, the term, as it relates to the belief itself, dates from 1971 and comes from , formed from , birthrate. As a population decline is observed in many countries associated with Population ageing, ageing and Modernization theory, cultural modernization, attempts at a political response are growing. According to the United Nations, UN, the share of countries with pronatalist policies had grown from 20% in 2005 to 28% in 2019. In recent decades, many countries have implemented pronatalist policies to counteract declining birth rates and aging populations. These policies often include financial incentives such as baby bonuses, tax breaks, and direct payments to families with children. However, experts note that fin ...
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Population Ethics
Population ethics is the philosophical study of the ethical problems arising when our actions affect ''who'' is born and ''how many'' people are born in the future. An important area within population ethics is population axiology, which is "the study of the conditions under which one state of affairs is better than another, ''when the states of affairs in question may differ over the numbers and the identities of the persons who ever live''." Moral philosopher Derek Parfit brought population ethics to the attention of the academic community as a modern branch of moral philosophy in his seminal work '' Reasons and Persons'' in 1984. Discussions of population ethics are thus a relatively recent development in the history of philosophy. Formulating a satisfactory theory of population ethics is regarded as "notoriously difficult". While scholars have proposed and debated many different population ethical theories, no consensus in the academic community has emerged. Gustaf Arrhenius ...
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Identity (philosophy)
In metaphysics, identity (from , "sameness") is the relation each thing bears only to itself. The notion of identity gives rise to many philosophical problems, including the identity of indiscernibles (if ''x'' and ''y'' share all their properties, are they one and the same thing?), and questions about change and personal identity over time (what has to be the case for a person ''x'' at one time and a person ''y'' at a later time to be one and the same person?). It is important to distinguish between ''qualitative identity'' and ''numerical identity''. For example, consider two children with identical bicycles engaged in a race while their mother is watching. The two children have the ''same'' bicycle in one sense (''qualitative identity'') and the ''same'' mother in another sense (''numerical identity''). This article is mainly concerned with ''numerical identity'', which is the stricter notion. The philosophical concept of identity is distinct from the better-known notion of ...
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