In recent years, the branching spacetime (BST) interpretation of quantum mechanics has come under study by a number of philosophers, physicists and mathematicians. This paper points out some implications of the BST interpretation for two areas of quantum physics: (1) quantum gravity, and (2) stochastic interpretations of quantum mechanics.

Provides an overview of Mark Sharlow's philosophical work with summaries of his positions. Includes references and links to his writings.

This paper is a critique of Richard Dawkins’ “argument from improbability” against the existence of God. This argument, which forms the core of Dawkins’ book The God Delusion, provides an interesting example of the use of scientific ideas in arguments about religion. Here I raise three objections: (1) The argument is inapplicable to philosophical conceptions of God that reduce most of God’s complexity to that of the physical universe. (2) The argument depends on a way of estimating probabilities that fails (...) for the probability of an entity that creates natural laws. (3) The argument supposes that complexity arises from past physical causes; however, some forms of complexity known to mathematics and logic do not arise in this way. After stating these three criticisms, I show that some of these same considerations undermine Dawkins’ critique of agnosticism. I close the paper with some remarks on Dawkins’ conception of God. (shrink)

This document consists primarily of an excerpt (chapter 14) from the author’s book From Brain to Cosmos. In that excerpt, the author uses the concept of subjective fact developed earlier in the book to address a question about consciousness: which physical systems (organisms or machines) are conscious? (This document depends heavily upon the concept of subjective fact developed in From Brain to Cosmos. Readers unfamiliar with that concept are strongly advised to read chapters 2 and 3 of From Brain to (...) Cosmos first. See the last page of this document for details on how to obtain those chapters.). (shrink)

An archive of Mark Sharlow's two blogs, "The Unfinishable Scroll" and "Religion: the Next Version." Covers Sharlow's views on metaphysics, epistemology, mind, science, religion, and politics. Includes topics and ideas not found in his papers.

This collection serves as an introduction to the concept of subjective fact, which plays a central role in some of the author's philosophical writings. The collection contains two book chapters and a paper. The first chapter (Chapter 2 of From Brain to Cosmos) begins with an informal characterization of the concept of subjective fact. Then it fleshes out this concept with examples, gives a more precise characterization, and addresses some potential weaknesses of the concept. This chapter shows how subjective fact (...) is related to key ideas in the philosophy of mind, such as intentionality. The second chapter (Chapter 3) is a detailed study of the concept of “instance of seeming” that was introduced in Chapter 2. Chapter 3 ends with some remarks on the modal logic of subjective facts. The paper, also by the book’s author, answers some potential questions about the ideas in the two included chapters. (shrink)

In this paper I argue in defense of an important fragment of folk psychology. Specifically, I argue that many propositions about the ontology of mental states and about mental causation are true largely because of certain observable features of human linguistic behavior. I conclude that these propositions are immune to common avenues of eliminativist criticism. I compare and contrast this argument with some previous arguments about the truth of folk psychology.

In this note I examine some implications of stochastic interpretations of quantum mechanics for the concept of "charge without charge" presented by Wheeler and Misner. I argue that if a stochastic interpretation of quantum mechanics were correct, then certain shortcomings of the "charge without charge" concept could be overcome.

This document consists primarily of excerpts (chapters 5 and 10-12) from the author’s book From Brain to Cosmos. These excerpts address several traditional problems about the histories of conscious subjects, using the concept of subjective fact that the author developed earlier in the book. Topics include the persistence of conscious subjects through time, the unity or disunity of the self, and the possibility of splitting conscious subjects. (These excerpts depend heavily upon the author’s concept of subjective fact as developed in (...) From Brain to Cosmos. Readers unfamiliar with that concept are strongly advised to read chapters 2 and 3 of that book first. See the last page of this document for details on how to obtain those chapters.). (shrink)

This document consists primarily of excerpts (chapters 5 and 7-9) from the author’s book From Brain to Cosmos. These excerpts address some traditional philosophical problems about temporal flux and identity through time, using the concept of subjective fact that the author developed earlier in the book. (Readers unfamiliar with that concept are strongly advised to read chapters 2 and 3 of From Brain to Cosmos first. See the last page of this document for details on how to obtain those chapters.).

This document consists primarily of an excerpt (chapter 6) from the author’s book From Brain to Cosmos. That excerpt presents an analysis of the problem of knowledge of other minds, using the concept of subjective fact that the author developed earlier in the book. (Readers unfamiliar with that concept are strongly advised to read chapters 2 and 3 of From Brain to Cosmos first. See the last page of this document for details on how to obtain those chapters.).

This document consists primarily of an excerpt (chapter 13) from the author’s book From Brain to Cosmos. In that excerpt, the author presents a study of the notion of truth using the concept of subjective fact developed earlier in the book. The author argues that mind-body materialism is compatible with certain forms of metaphysical idealism. The chapter closes with some remarks on relativism with regard to truth. (This document depends heavily upon the concept of subjective fact developed in From Brain (...) to Cosmos. Readers unfamiliar with that concept are strongly advised to read chapters 2 and 3 of From Brain to Cosmos first. See the last page of this document for details on how to obtain those chapters.). (shrink)

This document consists primarily of an excerpt (chapter 5) from the author’s book From Brain to Cosmos. That excerpt presents an analysis of personal identity through time, using the concept of subjective fact that the author developed earlier in the book. (Readers unfamiliar with that concept are strongly advised to read chapters 2 and 3 of From Brain to Cosmos first. See the last page of this document for details on how to obtain those chapters.).

This document consists primarily of an excerpt (chapter 4) from the author’s book From Brain to Cosmos. That excerpt presents a study of a specific problem about knowledge: the logical justification of one’s knowledge of the immediate past. (This document depends heavily upon the concept of subjective fact that the author developed in chapters 2 and 3 of From Brain to Cosmos. Readers unfamiliar with that concept are strongly advised to read those chapters first. See the last page of this (...) document for details on how to obtain those chapters.). (shrink)

This book is a collection of some of my writings that do not fit the mold of standard philosophical articles. These writings range over several topics, including religion, free will, human dignity, the nature of persons, and a few others. The longest item in the collection is an archive of my blog, The Unfinishable Scroll, as it existed when the book was put together. That blog covers many philosophical topics, including some I haven't discussed elsewhere. Also in the collection are (...) essays (formerly web-based) on topics ranging from progress, to skepticism, to metaphysics - and back again. The book even contains an archive of another, less well-known, blog of mine. (shrink)

This is not a normal book. It is a collection of transcripts of talks that I gave between the year 2003 and now. I gave most of these talks on the spur of the moment, without making notes ahead of time. (“Impromptu” is the usual term for that dangerous way of speaking.) One of the “talks” is not a transcript, but a set of notes for a talk I never gave. Any organization or order in the talks is purely coincidental—or (...) at least it’s not all my fault. (shrink)

In this note I examine the two main differences between Plato's and Dennett's views of the self as an abstract object. I point out that in the presence of certain forms of ontological realism, abstract-object theories of the self are compatible with the full reality of the self. I conclude with some remarks on the relationship between ontology and ethics.

In this paper I examine Daniel M. Wegner's line of argument against the causal efficacy of conscious will, as presented in Wegner's book "The Illusion of Conscious Will" (Cambridge, MA: The MIT Press, 2002). I argue that most of the evidence adduced in the book can be interpreted in ways that do not threaten the efficacy of conscious will. Also, I argue that Wegner's view of conscious will is not an empirical thesis, and that certain views of consciousness and the (...) self are immune to Wegner's line of argument. (shrink)

This is a draft for a revised edition of Mark Sharlow's book "From Brain to Cosmos." It includes most of the material from the first edition, two shorter pieces pertaining to the book, and a detailed new introduction.

In this paper, I explore the feasibility of a realistic interpretation of the quantum mechanical path integral - that is, an interpretation according to which the particle actually follows the paths that contribute to the integral. I argue that an interpretation of this sort requires spacetime to have a branching structure similar to the structures of the branching spacetimes proposed by previous authors. I point out one possible way to construct branching spacetimes of the required sort, and I ask whether (...) the resulting interpretation of quantum mechanics is empirically testable. (shrink)

In this paper I examine critically the relationship between the realist and nominalist views of abstract objects. I begin by pointing out some differences between the usage of existential statements in metaphysics and the usage of such statements in disciplines outside of philosophy. Then I propose an account of existence that captures the characteristic intuitions underlying the latter kind of usage. This account implies that abstract object existence claims are not as ontologically extravagant as they seem, and that such claims (...) are immune to certain standard nominalistic criticisms. (shrink)

Atheists sometimes use Bertrand Russell's teapot argument, and its variants with other objects in place of the teapot, to argue for the rationality of atheism. In this paper I show that this use of the teapot argument and its variants is unacceptably circular. The circularity arises because there is indirect evidence against the objects invoked in the arguments.

This document is an edited transcript of an impromptu talk by Mark F. Sharlow. In this talk, Dr. Sharlow examines one of the common arguments for God’s existence. He suggests that this argument is wrong, but not for the reason that skeptics usually cite. Instead, he points out a deeper error — and shows that by understanding this mistake, we can gain new insights into evolution and design.

In this note, I point out some implications of the experiential principle* for the nature of the relationship between language and the world. I argue that this principle implies the existence of a certain relationship between linguistic tokens and facts, and that this relationship undermines most critiques of the referentiality of language.

Many people regard the mind as something separate from the body. This includes many religious believers, who regard personality and self as attributes of an immortal soul. Some philosophers, relying on logic instead of faith, also have taken the position that the mind is distinct from the body and is not explainable in terms of bodily processes alone. The belief that a person is composed of a mind and a body, with neither one reducible to the other, has traditionally been (...) called dualism. (shrink)

In this paper, I define and study an abstract algebraic structure, the dimensive algebra, which embodies the most general features of the algebra of dimensional physical quantities. I prove some elementary results about dimensive algebras and suggest some directions for future work.

Poetry, it is said, can reveal truth. Yet despite the best efforts of philosophers and poets to describe this truth, very few understand what kinds of truth poetry can convey.* One fact seems clear: only a few of the truths of poetry can be captured equally well in prose. Poetry also conveys truths of a different kind — truths that seem to exist on a level entirely different level from that of ordinary, factual truth. Some poems try to teach moral (...) or practical lessons that also could be stated in prose.* But this is not the kind of truth that puzzles philosophers and critics. Poetry also can tell another kind of truth — a truth that may be mystifying to scholars, but that is well known to anyone who becomes acquainted with poetry in an intimate way. This kind of truth cannot be spoken of or contemplated on the same terms as ordinary fact. What is the nature of this strange, yet familiar kind of knowledge that poetry can bring to the human mind? (shrink)

This paper is a study of a distinctively chemical notion of possibility. This is the notion of possibility that occurs in chemical discourses when chemists speak of the possibility or impossibility of achieving a given result through chemical means. This notion pertains to the possibility of processes, not of compounds, so it differs from the kind of chemical possibility mentioned in Wittgenstein's Philosophical Investigations or the kinds discussed in the literature on Putnam's Twin Earth argument. I argue that this process-oriented (...) notion of possibility cannot be reduced in a simple way to physical possibility, and that standard possible worlds semantics does not allow a natural analysis of this notion. I suggest an extension of possible worlds semantics that may overcome this limitation. I finish by pointing out some open questions about chemical possibility. (shrink)

In this set of excerpts from an earlier book, I examine some philosophical issues surrounding the whole-part relationship. I present a series of thought experiments and other arguments designed to undermine the view that wholes are "nothing but" their parts.

The four talks in this collection are based on impromptu lectures by Mark Sharlow. Explores the topics of freedom, justice, punishment, capitalism, distributism, and the limits of government.

In this paper I explore the logical relationship between the question of the reality of qualia and the problem of universals. I argue that nominalism is inconsistent with the existence of qualia, and that realism either implies or makes plausible the existence of qualia. Thus, one's position on the existence of qualia is strongly constrained by one's answer to the problem of universals.

In this paper I propose a formalization, using modal logic, of the notion of possibility that phoneticians use when they judge speech sounds to be possible or impossible. I argue that the most natural candidate for a modal logic of phonetic possibility is the modal system T.

In this paper I examine a new variant of the well-known idea that the self is an abstract object. I propose a simple model of the self as a property of temporal slices of a body's history. I argue that this model, when combined with even a modest realism with regard to properties, implies that the self has many of the chief features traditionally attributed to selves. I conclude that this model allows one to reconcile the full reality of the (...) self with even the most deflationary materialistic theories of consciousness. (shrink)

Several decades ago, Wheeler and Misner presented a model of electric charge based on the topological trapping of electric field lines in wormholes. In this paper, which does not argue for or against the "charge without charge" concept, I describe some generalizations of this model which might serve as topological analogs of color charges and electroweak charges.

One of the most important ongoing debates in the philosophy of mind is the debate over the reality of the first-person character of consciousness.[1] Philosophers on one side of this debate hold that some features of experience are accessible only from a first-person standpoint. Some members of this camp, notably Frank Jackson, have maintained that epiphenomenal properties play roles in consciousness [2]; others, notably John R. Searle, have rejected dualism and regarded mental phenomena as entirely biological.[3] In the opposite camp (...) are philosophers who hold that all mental capacities are in some sense computational - or, more broadly, explainable in terms of features of information processing systems.[4] Consistent with this explanatory agenda, members of this camp normally deny that any aspect of mind is accessible solely from a first-person standpoint. This denial sometimes goes very far - even as far as Dennett's claim that the phenomenology of conscious experience does not really exist. (shrink)

The year is 1965. A child stands at the top of a hill, looking out over a vast golden meadow. In the field below is a dirt trail. Bicycles sail by on the trail, carrying other children to their playful destinations. Beyond the far edge of the field is the sea. On the sea are boats and ships — distant descendants of the caravels and barkentines that once explored the unknown waters of Earth.

is not about traditional skeptical thinkers like Descartes and Hume. Instead, it is about some of the ideas of today’s ”skeptics” — people who try to debunk things that seem too odd or too spiritual. This site is not meant to encourage weird beliefs, but it might make you wonder whether skepticism is a weird belief too.

This short e-book is (in the author's words) "an attempt to open up new and better ways of thinking about God." The author draws together insights from philosophy of religion, philosophy of mind, and ontology to construct a conception of God that avoids both supernaturalism and simplistic forms of pantheism.

takes a stand for liberty, and explores important topics such as punishment, capitalism, and the limits of government. If you are sick of the left and tired of the right, you just might like this.

critiques the degradation of the person in current philosophical thought. This page points out some challenges to behaviorism, eliminativism, postmodernism, and other antipersonal ideas.

The twentieth century was a century of progress. During those hundred years, humanity progressed from a world without airplanes, computers, or modern medicine to a new era in which these technological miracles were commonplace. These technical achievements were not the only accomplishments of that fateful century. There also were vast changes in social thought, with great steps forward toward human equality and freedom — the struggle for racial equality, the recognition of women's rights, and the defeat of the new, unprecedented (...) menaces of Nazism and, in many places, of Communism. (shrink)

This is a collection of articles and essays that bear on the relationship between scientific and poetical/romantic views of the world.

Fitting Attitudes accounts of value analogize or equate being good with being desirable, on the premise that ‘desirable’ means not, ‘able to be desired’, as Mill has been accused of mistakenly assuming, but ‘ought to be desired’, or something similar. The appeal of this idea is visible in the critical reaction to Mill, which generally goes along with his equation of ‘good’ with ‘desirable’ and only balks at the second step, and it crosses broad boundaries in terms of philosophers’ other (...) commitments. For example, Fitting Attitudes accounts play a central role both in T.M. Scanlon’s [1998] case against teleology, and in Michael Smith [2003], [unpublished] and Doug Portmore’s [2007] cases for it. And of course they have a long and distinguished history. (shrink)

Batterman and Rice ([2014]) argue that minimal models possess explanatory power that cannot be captured by what they call ‘common features’ approaches to explanation. Minimal models are explanatory, according to Batterman and Rice, not in virtue of accurately representing relevant features, but in virtue of answering three questions that provide a ‘story about why large classes of features are irrelevant to the explanandum phenomenon’ ([2014], p. 356). In this article, I argue, first, that a method (the renormalization group) they propose (...) to answer the three questions cannot answer them, at least not by itself. Second, I argue that answers to the three questions are unnecessary to account for the explanatoriness of their minimal models. Finally, I argue that a common features account, what I call the ‘generalized ontic conception of explanation’, can capture the explanatoriness of minimal models. (shrink)

Philosophers have tended to construe friendship as an intimate relationship involving mutual love, and have focused their discussions on this ‘true’ form of friendship. However, everyone recognizes that we use the word ‘friend’ and its cognates to refer, non-ironically, to those with whom we share various relationships that are not terribly intimate or which do not involve mutual love. I argue that there exists no general reason to restrict our philosophical focus to ‘true’ friendships, and allege that we can gain (...) important insights if we broaden our perspective to include lesser friends. I contend that friendships, in the broad sense (encompassing both ‘true’ and lesser forms), are necessarily relationships that are the product of significant collaborative norm manipulation. And I argue that understanding friendship in this way helps explain important features, including the difference between friendships and familiar relations, the non-fungibility of friends, and why friendships are often in flux. (shrink)

For years now, unionization has been under vigorous attack. Membership has been steadily declining, and with it union bargaining power. As a result, unions may soon lose their ability to protect workers from economic and personal abuse, as well as their significance as a political force. In the Name of Liberty responds to this worrying state of affairs by presenting a new argument for unionization, one that derives an argument for universal unionization in both the private and public sector from (...) concepts of liberty that we already accept. In short, In the Name of Liberty reclaims the argument for liberty from the political right, and shows how liberty not only requires the unionization of every workplace as a matter of background justice, but also supports a wide variety of other progressive policies. (shrink)

Lange argues that some natural phenomena can be explained by appeal to mathematical, rather than natural, facts. In these “distinctively mathematical” explanations, the core explanatory facts are either modally stronger than facts about ordinary causal law or understood to be constitutive of the physical task or arrangement at issue. Craver and Povich argue that Lange’s account of DME fails to exclude certain “reversals”. Lange has replied that his account can avoid these directionality charges. Specifically, Lange argues that in legitimate DMEs, (...) but not in their “reversals,” the empirical fact appealed to in the explanation is “understood to be constitutive of the physical task or arrangement at issue” in the explanandum. I argue that Lange’s reply is unsatisfactory because it leaves the crucial notion of being “understood to be constitutive of the physical task or arrangement” obscure in ways that fail to block “reversals” except by an apparent ad hoc stipulation or by abandoning the reliance on understanding and instead accepting a strong realism about essence. (shrink)

This chapter examines two ways in which liberal thinkers have appealed to claims about disagreement in order to defend a principle of free speech. One argument, from Mill, says that free speech is a necessary condition for healthy disagreement, and that healthy disagreement is conducive to human flourishing. The other argument says that in a community of people who disagree about questions of value, free speech is a necessary condition of legitimate democratic government. We argue that both of these arguments, (...) in their standard guises, are premised upon contestable views about the realpolitik of disagreement in a liberal society. (shrink)

The ambiguity theory of “knows” is the view that knows and its cognates have more than one propositional sense—i.e., more than one sense that can properly be used in “knows that” etc. constructions. The ambiguity theory of “know” has received relatively little attention as an account of the truth-conditions for knowledge ascriptions and denials—especially compared to views like classical, moderate invariantism and epistemic contextualism. In this paper, it is argued that the ambiguity theory of knows has an advantage over both (...) classical, moderate invariantism and epistemic contextualism. This advantage is that it is the only one of these views that can account for “diverging knowledge responses without inconsistency” —i.e., cases in which, for the same subject S and proposition p, one and the same speaker says truly “S knows p” but instead could have truly said “S does not know p” and vice versa. This paper argues both for the existence of DRWI scenarios and the ability of the ambiguity theory of knows to best explain their existence. (shrink)

In this chapter, we address the roles that exemplars might play in a comprehensive response to epistemic injustice. Fricker defines epistemic injustices as harms people suffer specifically in their capacity as (potential) knowers. We focus on testimonial epistemic injustice, which occurs when someone’s assertoric speech acts are systematically met with either too little or too much credence by a biased audience. Fricker recommends a virtue­theoretic response: people who do not suffer from biases should try to maintain their disposition towards naive (...) testimonial justice, and those who find themselves already biased should cultivate corrective testimonial justice by systematically adjusting their credence in testimony up or down depending on whether they are hearing from someone whom they may be biased against or in favor of. We doubt that the prominent admiration­emulation model of exemplarism will be much use in this connection, so we propose two ways of learning from negative exemplars to better conduct one’s epistemic affairs. In the admiration­emulation model, both the identification of what a virtue is and the cultivation of virtues identified thusly proceed through the admiration of virtuous exemplars. We show that this model has serious flaws and argue for two alternatives: the envy­agonism model and the ambivalence­avoidance model. (shrink)