Accuracy and the Laws of Credence

Accuracy and the Laws of Credence PDF Author: Richard Pettigrew
Publisher: Oxford University Press
ISBN: 0198732716
Category : Mathematics
Languages : en
Pages : 251

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Book Description
Richard Pettigrew offers an extended investigation into a particular way of justifying the rational principles that govern our credences (or degrees of belief). The main principles that he justifies are the central tenets of Bayesian epistemology, though many other related principles are discussed along the way. These are: Probabilism, the claims that credences should obey the laws of probability; the Principal Principle, which says how credences in hypotheses about the objective chances should relate to credences in other propositions; the Principle of Indifference, which says that, in the absence of evidence, we should distribute our credences equally over all possibilities we entertain; and Conditionalization, the Bayesian account of how we should plan to respond when we receive new evidence. Ultimately, then, this book is a study in the foundations of Bayesianism. To justify these principles, Pettigrew looks to decision theory. He treats an agent's credences as if they were a choice she makes between different options, gives an account of the purely epistemic utility enjoyed by different sets of credences, and then appeals to the principles of decision theory to show that, when epistemic utility is measured in this way, the credences that violate the principles listed above are ruled out as irrational. The account of epistemic utility set out here is the veritist's: the sole fundamental source of epistemic utility for credences is their accuracy. Thus, Pettigrew conducts an investigation in the version of epistemic utility theory known as accuracy-first epistemology. The book can also be read as an extended reply on behalf of the veritist to the evidentialist's objection that veritism cannot account for certain evidential principles of credal rationality, such as the Principal Principle, the Principle of Indifference, and Conditionalization.

Accuracy and the Laws of Credence

Accuracy and the Laws of Credence PDF Author: Richard Pettigrew
Publisher: Oxford University Press
ISBN: 0198732716
Category : Mathematics
Languages : en
Pages : 251

Get Book Here

Book Description
Richard Pettigrew offers an extended investigation into a particular way of justifying the rational principles that govern our credences (or degrees of belief). The main principles that he justifies are the central tenets of Bayesian epistemology, though many other related principles are discussed along the way. These are: Probabilism, the claims that credences should obey the laws of probability; the Principal Principle, which says how credences in hypotheses about the objective chances should relate to credences in other propositions; the Principle of Indifference, which says that, in the absence of evidence, we should distribute our credences equally over all possibilities we entertain; and Conditionalization, the Bayesian account of how we should plan to respond when we receive new evidence. Ultimately, then, this book is a study in the foundations of Bayesianism. To justify these principles, Pettigrew looks to decision theory. He treats an agent's credences as if they were a choice she makes between different options, gives an account of the purely epistemic utility enjoyed by different sets of credences, and then appeals to the principles of decision theory to show that, when epistemic utility is measured in this way, the credences that violate the principles listed above are ruled out as irrational. The account of epistemic utility set out here is the veritist's: the sole fundamental source of epistemic utility for credences is their accuracy. Thus, Pettigrew conducts an investigation in the version of epistemic utility theory known as accuracy-first epistemology. The book can also be read as an extended reply on behalf of the veritist to the evidentialist's objection that veritism cannot account for certain evidential principles of credal rationality, such as the Principal Principle, the Principle of Indifference, and Conditionalization.

Accuracy and the Laws of Credence

Accuracy and the Laws of Credence PDF Author: Richard Pettigrew
Publisher: Oxford University Press
ISBN: 0191047252
Category : Philosophy
Languages : en
Pages : 256

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Book Description
Richard Pettigrew offers an extended investigation into a particular way of justifying the rational principles that govern our credences (or degrees of belief). The main principles that he justifies are the central tenets of Bayesian epistemology, though many other related principles are discussed along the way. These are: Probabilism, the claims that credences should obey the laws of probability; the Principal Principle, which says how credences in hypotheses about the objective chances should relate to credences in other propositions; the Principle of Indifference, which says that, in the absence of evidence, we should distribute our credences equally over all possibilities we entertain; and Conditionalization, the Bayesian account of how we should plan to respond when we receive new evidence. Ultimately, then, this book is a study in the foundations of Bayesianism. To justify these principles, Pettigrew looks to decision theory. He treats an agent's credences as if they were a choice she makes between different options, gives an account of the purely epistemic utility enjoyed by different sets of credences, and then appeals to the principles of decision theory to show that, when epistemic utility is measured in this way, the credences that violate the principles listed above are ruled out as irrational. The account of epistemic utility set out here is the veritist's: the sole fundamental source of epistemic utility for credences is their accuracy. Thus, Pettigrew conducts an investigation in the version of Iepistemic utility theory known as accuracy-first epistemology. The book can also be read as an extended reply on behalf of the veritist to the evidentialist's objection that veritism cannot account for certain evidential principles of credal rationality, such as the Principal Principle, the Principle of Indifference, and Conditionalization.

Choosing for Changing Selves

Choosing for Changing Selves PDF Author: Richard Pettigrew
Publisher: Oxford University Press, USA
ISBN: 0198814968
Category : Philosophy
Languages : en
Pages : 268

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Book Description
What we value, like, endorse, want, and prefer changes over the course of our lives, sometimes as a result of decisions we make--such as when we choose to become a parent or move to a new country--and sometimes as a result of forces beyond our control--such as when our political views change as we grow older. This poses a problem for any theory of how we ought to make decisions. Which values and preferences should we appeal to when we are making our decisions? Our current values? Our past ones? Our future ones? Or some amalgamation of all them? But if that, which amalgamation? In Choosing for Changing Selves, Richard Pettigrew presents a theory of rational decision making for agents who recognise that their values will change over time and whose decisions will affect those future times.

Epistemic Consequentialism

Epistemic Consequentialism PDF Author: Kristoffer Ahlström
Publisher: Oxford University Press
ISBN: 0198779682
Category : Philosophy
Languages : en
Pages : 344

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Book Description
An important issue in epistemology concerns the source of epistemic normativity. Epistemic consequentialism maintains that epistemic norms are genuine norms in virtue of the way in which they are conducive to epistemic value, whatever epistemic value may be. So, for example, the epistemic consequentialist might say that it is a norm that beliefs should be consistent, in that holding consistent beliefs is the best way to achieve the epistemic value of accuracy. Thus epistemic consequentialism is structurally similar to the family of consequentialist views in ethics. Recently, philosophers from both formal epistemology and traditional epistemology have shown interest in such a view. In formal epistemology, there has been particular interest in thinking of epistemology as a kind of decision theory where instead of maximizing expected utility one maximizes expected epistemic utility. In traditional epistemology, there has been particular interest in various forms of reliabilism about justification and whether such views are analogous to-and so face similar problems to-versions of consequentialism in ethics. This volume presents some of the most recent work on these topics as well as others related to epistemic consequentialism, by authors that are sympathetic to the view and those who are critical of it.

Degrees of Belief

Degrees of Belief PDF Author: Franz Huber
Publisher: Springer Science & Business Media
ISBN: 1402091982
Category : Philosophy
Languages : en
Pages : 352

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Book Description
This anthology is the first book to give a balanced overview of the competing theories of degrees of belief. It also explicitly relates these debates to more traditional concerns of the philosophy of language and mind and epistemic logic.

Epistemic Authority

Epistemic Authority PDF Author: Linda Trinkaus Zagzebski
Publisher: Oxford University Press
ISBN: 0190278269
Category : Philosophy
Languages : en
Pages : 294

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Book Description
Gives an extended argument for epistemic authority from the implications of reflective self-consciousness. Epistemic authority is compatible with autonomy, but epistemic self-reliance is incoherent. The book argues that epistemic and emotional self-trust are rational and inescapable, that consistent self-trust commits us to trust in others, and that among those we are committed to trusting are some whom we ought to treat as epistemic authorities, modelled on the well-known principles of authority of Joseph Raz. Some of these authorities can be in the moral and religious domains. The book investigates the way the problem of disagreement between communities or between the self and others is a conflict within self-trust, and argue against communal self-reliance on the same grounds as the book uses in arguing against individual self-reliance. The book explains how any change in belief is justified--by the conscientious judgment that the change will survive future conscientious self-reflection. The book concludes with an account of autonomy. -- Información de la editorial.

Higher-Order Evidence

Higher-Order Evidence PDF Author: Mattias Skipper
Publisher: Oxford University Press
ISBN: 0192565354
Category : Philosophy
Languages : en
Pages : 336

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Book Description
We often have reason to doubt our own ability to form rational beliefs, or to doubt that some particular belief of ours is rational. Perhaps we learn that a trusted friend disagrees with us about what our shared evidence supports. Or perhaps we learn that our beliefs have been afflicted by motivated reasoning or by other cognitive biases. These are examples of higher-order evidence. While it may seem plausible that higher-order evidence should somehow impact our beliefs, it is less clear how and why. Normally, when evidence impacts our beliefs, it does so by virtue of speaking for or against the truth of theirs contents. But higher-order evidence does not directly concern the contents of the beliefs that they impact. In recent years, philosophers have become increasingly aware of the need to understand the nature and normative role of higher-order evidence. This is partly due to the pervasiveness of higher-order evidence in human life. But it has also become clear that higher-order evidence plays a central role in many epistemological debates, spanning from traditional discussions of internalism/externalism about epistemic justification to more recent discussions of peer disagreement and epistemic akrasia. This volume brings together, for the first time, a distinguished group of leading and up-and-coming epistemologists to explore a wide range of interrelated issues about higher-order evidence.

Strengthening Forensic Science in the United States

Strengthening Forensic Science in the United States PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309142393
Category : Law
Languages : en
Pages : 348

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Book Description
Scores of talented and dedicated people serve the forensic science community, performing vitally important work. However, they are often constrained by lack of adequate resources, sound policies, and national support. It is clear that change and advancements, both systematic and scientific, are needed in a number of forensic science disciplines to ensure the reliability of work, establish enforceable standards, and promote best practices with consistent application. Strengthening Forensic Science in the United States: A Path Forward provides a detailed plan for addressing these needs and suggests the creation of a new government entity, the National Institute of Forensic Science, to establish and enforce standards within the forensic science community. The benefits of improving and regulating the forensic science disciplines are clear: assisting law enforcement officials, enhancing homeland security, and reducing the risk of wrongful conviction and exoneration. Strengthening Forensic Science in the United States gives a full account of what is needed to advance the forensic science disciplines, including upgrading of systems and organizational structures, better training, widespread adoption of uniform and enforceable best practices, and mandatory certification and accreditation programs. While this book provides an essential call-to-action for congress and policy makers, it also serves as a vital tool for law enforcement agencies, criminal prosecutors and attorneys, and forensic science educators.

Aftershock

Aftershock PDF Author: David Wiedemer
Publisher: John Wiley & Sons
ISBN: 1118127528
Category : Business & Economics
Languages : en
Pages : 314

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Book Description
A practical guide to preparing for the next phase of the financial meltdown From the authors who were the first to predict Phase I of our current economic downturn-in their landmark 2006 book, America's Bubble Economy-comes their insightful sequel discussing their predictions for the next phase of the Bubble Economy. It may seem like the worst has come and gone, but it hasn't. With their proven track record of accurate predictions-which most financial professionals and economists missed-the authors explain how and why the next phase of the financial meltdown is about to hit. Things are not going back to how they were before. Instead, we are moving through uncharted territory, with new challenges and opportunities that few people can anticipate. Written in a straightforward and accessible style, Aftershock shows readers how to seek safety and profits in these dynamic economic conditions. Discusses how to protect assets, businesses, and jobs before and during the second wave of financial meltdown Provides clear and accurate advice on how to profit from the collapsing bubbles Offer focused guidance regarding real estate, which will continue to be a pressing concern for many The authors' first book was chosen by Kiplinger's as one of the 30 Best Business Books of 2006, and its accuracy has been hailed by Paul Farrell of Dow Jones MarketWatch when he said "America's Bubble Economy's Predictions, though ignored, were accurate." Don't miss out on these time tested author's proven advice for how to mange your money during the coming financial meltdown.

Pragmatic Encroachment in Epistemology

Pragmatic Encroachment in Epistemology PDF Author: Brian Kim
Publisher: Routledge
ISBN: 1351685244
Category : Philosophy
Languages : en
Pages : 226

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Book Description
According to philosophical lore, epistemological orthodoxy is a purist epistemology in which epistemic concepts such as belief, evidence, and knowledge are characterized to be pure and free from practical concerns. In recent years, the debate has focused narrowly on the concept of knowledge and a number of challenges have been posed against the orthodox, purist view of knowledge. While the debate about knowledge is still a lively one, the pragmatic exploration in epistemology has just begun. This collection takes on the task of expanding this exploration into new areas. It discusses how the practical might encroach on all areas of our epistemic lives from the way we think about belief, confidence, probability, and evidence to our ideas about epistemic value and excellence. The contributors also delve into the ramifications of pragmatic views in epistemology for questions about the value of knowledge and its practical role. Pragmatic Encroachment in Epistemology will be of interest to a broad range of epistemologists, as well as scholars working on virtue theory and practical reason.