Logic has traditionally been construed as a normative discipline; it sets forth standards of correct reasoning. Explosion is a valid principle of classical logic. It states that an inconsistent set of propositions entails any proposition whatsoever. However, ordinary agents presumably do — occasionally, at least — have inconsistent belief sets. Yet it is false that such agents may, let alone ought to, believe any proposition they please. Therefore, our logic should not recognize explosion as a logical law. Call (...) this the ‘normative argument against explosion’. Arguments of this type play — implicitly or explicitly — a central role in motivating paraconsistent logics. Branden Fitelson, in a throwaway remark, has conjectured that there is no plausible ‘bridge principle’ articulating the normative link between logic and reasoning capable of supporting such arguments. This paper offers a critical evaluation of Fitelson’s conjecture, and hence of normative arguments for paraconsistency and the conceptions of logic’s normative status on which they repose. It is argued that Fitelson’s conjecture turns out to be correct: normative arguments for paraconsistency probably fail. (shrink)

The twentieth-century logical mainstream, derived from works by Łukasiewicz and Scholz, pictures the history of logic for the most part as the prehistory of Boolean–Fregean mathematical logic. Particularly, with respect to classical propositional calculus, the Stoic logic has been pictured as an early stage of it and Aristotle's or the Peripatetics' logic as a theory that assumes it. Although it was not emphasised, it follows that the ancient logics contain the principle of explosion. In the endmost quarter of the (...) twentieth century, a competitive view began to spread to the effect that the ancient systems of logic were paraconsistent or relevantistic. In the twenty-first century, the latter view prevails and has every chance of becoming a new orthodoxy. It is claimed that although in Łukasiewicz's argument for the classicality of ancient logics, there are gaps, it may be demonstrated that the ancient logics contain the principle of explosion. (shrink)

(2014). Explosive Population Growth in Tropical Africa: Crucial Omission in Development Forecasts—Emerging Risks and Way Out. World Futures: Vol. 70, No. 2, pp. 120-139.

In this paper, I develop a novel account of ideological kinds. I first present some conceptual territory regarding the use of Occam’s Razor in minimizing ontological commitments. I then present the analogous device for minimizing ideological commitments, what I call the Comb. I argue that metaphysicians ought to use both or none at all. This means that those who endorse a principle of ontological parsimony ought to also endorse some principle of ideological parsimony, where we ought to prefer the metaphysical (...) theory that employs less ideology. In support of one such principle, I propose a novel account of ideological kinds. I individuate ideological kinds based on the satisfaction of two conditions: interdefinability and sameness of syntactic category. Ultimately, I think this account is the best available. It does, however, produce surprising results. For instance, my account shows that quantifier pluralism is ideologically parsimonious. I end by replying to some objections. (shrink)

One strategy for defending paraconsistent logics involves raising ‘normative arguments’ against the inference rule explosion. Florian Steinberger systematically criticises a wide variety of formulations of such arguments. I argue that, for one such formulation, Steinberger’s criticisms fail. I then sketch an argument, available to those who deny dialetheism, in defence of the formulation in question.

ㅤThis article is part of a symposium on Jc Beall's "Christ-A Contradiction.".

Argument“How should a modern artist react to the atomic age?” Time magazine posed this question in 1952 to open a review of an exhibition of paintings inspired by the “explosion of the atomic bomb” and by the “discovery of nuclear energy.” The energetic paintings of the Italian Spatial Movement were, according to Time, “almost as explosive as the bomb itself.” “Explosiveness” was a defining feature of much 1950s art, whose main impulse, gestural abstraction, has previously been understood as the (...) urgent expression of the artist's subjectivity. This paper argues that explosiveness in art can also be seen as an “expression” of the realities of the nuclear era. Postwar artists were ambivalent about the explosive forces, both liberating and devastating, that lay within the atom. Toward the end of the 1950s, no longer content merely to represent atomic disintegration, some artists went so far as to propose the outright self-destruction of the work of art as the only fitting means of expression in the atomic age.One must – and this is not an exaggeration – keep in mind that we are living in the atomic age, where everything material and physical could disappear from one day to another, to be replaced by nothing but the ultimate abstraction imaginable.– Yves Klein 1958. (shrink)

A calculus for classical propositional sequents is introduced that consists of a restricted version of the cut rule and local variants of the logical rules. Employed in the style of proof search, this calculus explodes a given sequent into its elementary structural sequents—the topmost sequents in a derivation thus constructed—which do not contain any logical constants. Some of the properties exhibited by the collection of elementary structural sequents in relation to the sequent they are derived from, uniqueness and unique representation (...) of formula occurrences, will be discussed in detail. Based on these properties it is suggested that a collection of elementary structural sequents constitutes the purely structural representation of the sequent from which it is obtained. (shrink)

Science and revelation have been presented as two books with the same “author,” their reconciliation being called “concordism.” Teilhard opposed concordism, insisting that supposed “revelations” be treated as scientific hypotheses to be verified or not in experience. Applying his criterion for truth (Does it bring “coherence and fecundity” to the phenomena?) to Christian revelation, he told of finding “an explosion of dazzling flashes.” So Teilhard spoke of the hypothesis as the supreme spiritual act wherein the dust of experience takes (...) on form and is kindled at the fire of knowledge. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Ethics & the Environment 8.2 (2003) 71-79 [Access article in PDF] "Explosion" Greta Gaard I. In the beginning there was only water, and you were a part of it. Never mind what else you have heard. This was your first relationship, your connection to water. And the quality of this relationship, the character of your beliefs about water, shapes all relationships in your life. The way you do (...) one thing is the way you do everything. You cannot separate one relationship from another, treat this water with reverence, this water with waste. Because water returns. Water knows there are no separations. You too should know this, for water has been teaching you, from the beginning.Imagine a creek flowing through the length of your life, from your birth to your death. Yes, your death. Water precedes you, water survives you. Consider the silence of blue-ice glaciers, ancient in their solitude, melting. Each winter the snowfall thick and wet, fluffy, or crisp and dry. Each spring the snows melting, glaciers growing and melting. Water flows down pine needles and cedar bark, flows down rocks and fallen logs, flows through moss and soil and sand.The lake gathers rainfall, gathers snowmelt and the plenitude of creeks. The lake overflows, spills, falls, exuberance of fullness, joy in motion, streaming downhill now, swelling the creek bed where it has made this journey so many times before.You have never seen this creek, the hidden water that flows through your days and nights, from one season to the next. Without it you would not live. You rely on this unseen water to flow forever. It has flowed here [End Page 71] before you were born, before you stepped into its flow, and you imagine it will outlast you, outlast whatever you might do to this water. You believe it is limitless, unending. You know its persistent force has carved rocks because you can see them, see the way water flows through stone, leaving its imprint in kettles, in the basins of water where rocks circulate, in the interlaced fingers of water and stone embracing at the falls.Water becomes you. But Narcissus-like, you look at water and see only your self. You believe you are alone. You are afraid. You need to con-trol this fear, this aloneness, this terrifying separation. You see the power of water and you want power. Power will give you control. You build dams and concrete channels and ditches, believing that by doing this you will control the power of water, the fertility of water, the fear of your separation. But water is patient. There are laws that govern the way of water, the ways of energy and power, the ways of land. There are consequences. Water bears no grudge, extracts no retribution. Your own actions, skillful or unskillful, determine the outcome. Your own relationship to water will poison you or save you. You decide.You believe blocking the flow of water gives you power.You believe blocking the flow of feeling gives you power.You believe harnessing the animals, fencing off the land gives you power. And for awhile, these strategies work.But there are consequences. That which is diverted, divided, suppressed, always returns with greater force, and when it returns, no one can control it. No one. II. Imagine a family. Picture the elders first. How many do you see? Where are the children? The sisters and brothers, aunts and uncles, cousins and nephews and grandchildren? How many people are needed to form a family? Can you be a family of one?Look at it another way: is there a limit to the relations of family? Is there a certain number of people allowed in a family until a limit is reached? Do you say, "Families may only have ten people"? "The eleventh person will not be included." Or do you point to the basis of inclusion, the things that bind you, one to another, and say, "Yes, this person too"?How do you recognize a family?Do family members have to pulse with the same blood, or will love create a family where the blood... (shrink)

Around 540 million years ago there was a sudden, dramatic adaptive radiation known as the Cambrian Explosion. This event marked the origin of almost all of the phyla (major lineages characterized by fundamental body plans) of animals that would ever live on earth, as well the appearance of many notable features such as rigid skeletons and other hard parts, complex jointed appendages, eyes, and brains. This radical evolutionary event has been a major puzzle for evolutionary biologists since Darwin, and (...) while our understanding of it has recently improved with new fossil finds, richer molecular phylogenies, and better grasp of ecological, evolutionary, and developmental processes generally, unanswered questions remain. In this paper I argue that a basic cognitive toolkit for embodied, object-oriented, spatial cognition (what I call Basic Cognitive Embodiment) is a practical necessity for control of a large, mobile, complexly articulated body in space. This hypothesis allows us to relate the complexification of animal bodies to the complexification of perception, cognition and behavior in a way that can help to fill in gaps in our emerging picture of the Cambrian Explosion, as well as shed light on the deep evolutionary origins of the mind. (shrink)

The task of my inquiry is to lay out the main lines of Eugen Fink’s reading of Kant, focusing on his interpretation of the Transcendental Dialectic. In the first part, I explain Fink’s claim that the Transcendental Dialectic represents the very heart of the Kantian project, in as much it is in this section of the first Critique that the question of totality (on Fink’s account, the driving impetus of this work) first comes to the forefront. Secondly, I undertake an (...) examination of Fink’s argument regarding the proper outcome of the “Antinomies of Pure Reason,” according to which the failure of the attempts to determine the world with “innerworldly models” is not a sufficient reason to contend that the world is merely a subjective idea. Finally, I discuss Fink’s thesis concerning the construction of the “Transcendental Ideal” according to which the transition from the omnitudo realitatis to the ens realissimum is not necessary (neither objectively, nor subjectively). In this regard, Fink’s project can be understood as an attempt to think the omnitudo realitatis for itself, prior to and independent from any realization in a being (be it a supreme one). (shrink)

Not only in its conceptual reconstruction but also in the straightforward application of Badioursquo;s thought its problems and tensions come to light. This paper thus sets out to identify a generic truth procedure in the domain of art; specifically within theatre starting out from the Meyerhold-event and tracing enquiries in the work of Artaud and Brecht. It turns out once one follows the lines of further enquiries one ends up sketching an explosive genealogy that gives rise to the concept of (...) an art of presentation transgressing the boundaries of theatre, art and philosophy. (shrink)

Not only in its conceptual reconstruction but also in the straightforward application of Badioursquo;s thought its problems and tensions come to light. This paper thus sets out to identify a generic truth procedure in the domain of art; specifically within theatre starting out from the Meyerhold-event and tracing enquiries in the work of Artaud and Brecht. It turns out once one follows the lines of further enquiries one ends up sketching an explosive genealogy that gives rise to the concept of (...) an art of presentation transgressing the boundaries of theatre, art and philosophy. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Ethics & the Environment 8.2 (2003) 71-79 [Access article in PDF] "Explosion" Greta Gaard I. In the beginning there was only water, and you were a part of it. Never mind what else you have heard. This was your first relationship, your connection to water. And the quality of this relationship, the character of your beliefs about water, shapes all relationships in your life. The way you do (...) one thing is the way you do everything. You cannot separate one relationship from another, treat this water with reverence, this water with waste. Because water returns. Water knows there are no separations. You too should know this, for water has been teaching you, from the beginning.Imagine a creek flowing through the length of your life, from your birth to your death. Yes, your death. Water precedes you, water survives you. Consider the silence of blue-ice glaciers, ancient in their solitude, melting. Each winter the snowfall thick and wet, fluffy, or crisp and dry. Each spring the snows melting, glaciers growing and melting. Water flows down pine needles and cedar bark, flows down rocks and fallen logs, flows through moss and soil and sand.The lake gathers rainfall, gathers snowmelt and the plenitude of creeks. The lake overflows, spills, falls, exuberance of fullness, joy in motion, streaming downhill now, swelling the creek bed where it has made this journey so many times before.You have never seen this creek, the hidden water that flows through your days and nights, from one season to the next. Without it you would not live. You rely on this unseen water to flow forever. It has flowed here [End Page 71] before you were born, before you stepped into its flow, and you imagine it will outlast you, outlast whatever you might do to this water. You believe it is limitless, unending. You know its persistent force has carved rocks because you can see them, see the way water flows through stone, leaving its imprint in kettles, in the basins of water where rocks circulate, in the interlaced fingers of water and stone embracing at the falls.Water becomes you. But Narcissus-like, you look at water and see only your self. You believe you are alone. You are afraid. You need to con-trol this fear, this aloneness, this terrifying separation. You see the power of water and you want power. Power will give you control. You build dams and concrete channels and ditches, believing that by doing this you will control the power of water, the fertility of water, the fear of your separation. But water is patient. There are laws that govern the way of water, the ways of energy and power, the ways of land. There are consequences. Water bears no grudge, extracts no retribution. Your own actions, skillful or unskillful, determine the outcome. Your own relationship to water will poison you or save you. You decide.You believe blocking the flow of water gives you power.You believe blocking the flow of feeling gives you power.You believe harnessing the animals, fencing off the land gives you power. And for awhile, these strategies work.But there are consequences. That which is diverted, divided, suppressed, always returns with greater force, and when it returns, no one can control it. No one. II. Imagine a family. Picture the elders first. How many do you see? Where are the children? The sisters and brothers, aunts and uncles, cousins and nephews and grandchildren? How many people are needed to form a family? Can you be a family of one?Look at it another way: is there a limit to the relations of family? Is there a certain number of people allowed in a family until a limit is reached? Do you say, "Families may only have ten people"? "The eleventh person will not be included." Or do you point to the basis of inclusion, the things that bind you, one to another, and say, "Yes, this person too"?How do you recognize a family?Do family members have to pulse with the same blood, or will love create a family where the blood... (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Ethics & the Environment 8.2 (2003) 71-79 [Access article in PDF] "Explosion" Greta Gaard I. In the beginning there was only water, and you were a part of it. Never mind what else you have heard. This was your first relationship, your connection to water. And the quality of this relationship, the character of your beliefs about water, shapes all relationships in your life. The way you do (...) one thing is the way you do everything. You cannot separate one relationship from another, treat this water with reverence, this water with waste. Because water returns. Water knows there are no separations. You too should know this, for water has been teaching you, from the beginning.Imagine a creek flowing through the length of your life, from your birth to your death. Yes, your death. Water precedes you, water survives you. Consider the silence of blue-ice glaciers, ancient in their solitude, melting. Each winter the snowfall thick and wet, fluffy, or crisp and dry. Each spring the snows melting, glaciers growing and melting. Water flows down pine needles and cedar bark, flows down rocks and fallen logs, flows through moss and soil and sand.The lake gathers rainfall, gathers snowmelt and the plenitude of creeks. The lake overflows, spills, falls, exuberance of fullness, joy in motion, streaming downhill now, swelling the creek bed where it has made this journey so many times before.You have never seen this creek, the hidden water that flows through your days and nights, from one season to the next. Without it you would not live. You rely on this unseen water to flow forever. It has flowed here [End Page 71] before you were born, before you stepped into its flow, and you imagine it will outlast you, outlast whatever you might do to this water. You believe it is limitless, unending. You know its persistent force has carved rocks because you can see them, see the way water flows through stone, leaving its imprint in kettles, in the basins of water where rocks circulate, in the interlaced fingers of water and stone embracing at the falls.Water becomes you. But Narcissus-like, you look at water and see only your self. You believe you are alone. You are afraid. You need to con-trol this fear, this aloneness, this terrifying separation. You see the power of water and you want power. Power will give you control. You build dams and concrete channels and ditches, believing that by doing this you will control the power of water, the fertility of water, the fear of your separation. But water is patient. There are laws that govern the way of water, the ways of energy and power, the ways of land. There are consequences. Water bears no grudge, extracts no retribution. Your own actions, skillful or unskillful, determine the outcome. Your own relationship to water will poison you or save you. You decide.You believe blocking the flow of water gives you power.You believe blocking the flow of feeling gives you power.You believe harnessing the animals, fencing off the land gives you power. And for awhile, these strategies work.But there are consequences. That which is diverted, divided, suppressed, always returns with greater force, and when it returns, no one can control it. No one. II. Imagine a family. Picture the elders first. How many do you see? Where are the children? The sisters and brothers, aunts and uncles, cousins and nephews and grandchildren? How many people are needed to form a family? Can you be a family of one?Look at it another way: is there a limit to the relations of family? Is there a certain number of people allowed in a family until a limit is reached? Do you say, "Families may only have ten people"? "The eleventh person will not be included." Or do you point to the basis of inclusion, the things that bind you, one to another, and say, "Yes, this person too"?How do you recognize a family?Do family members have to pulse with the same blood, or will love create a family where the blood... (shrink)

The aim of this article is to show that externalist accounts of cognition such as Clark and Chalmers' (1998) “active externalism” lead to an explosion of knowledge that is caused by online resources such as Wikipedia and Google. I argue that externalist accounts of cognition imply that subjects who integrate mobile Internet access in their cognitive routines have millions of standing beliefs on unexpected issues such as the birth dates of Moroccan politicians or the geographical coordinates of villages in (...) southern Indonesia. Although many externalists propose criteria for the bounds of cognition that are designed to avoid this explosion of knowledge, I argue that these criteria are flawed and that active externalism has to accept that information resources such as Wikipedia and Google constitute extended cognitive processes. (shrink)

This article aims to clarify the ethical and theological importance of the conclusion of Either/Or. The author argues that the fundamental psychological, philosophical, and theological contradictions and conflicts of the book’s protagonists—an accidental editor, an alienated litterateur, a didactic judge, a solitary pastor—are most radically expressed in the Ultimatum, and are no less radically resolved therein. The first half of the article concerns the literary structure and existential drama of Either/Or as a whole, and reads Victor Eremita’s editorial explanation of (...) how the papers of A and B came into his hands as a religious allegory that anticipates the possibility of existential rebirth with which the book concludes. The second half examines the Ultimatum, and its attempt to break open souls that have closed themselves off from the terrors and joys of reality. (shrink)

A unified and modular falsification-aware single-succedent Gentzen-style framework is introduced for classical, paradefinite, paraconsistent, and paracomplete logics. This framework is composed of two special inference rules, referred to as the rules of explosion and excluded middle, which correspond to the principle of explosion and the law of excluded middle, respectively. Similar to the cut rule in Gentzen’s LK for classical logic, these rules are admissible in cut-free LK. A falsification-aware single-succedent Gentzen-style sequent calculus fsCL for classical logic is (...) formalized based on the proposed framework. The calculus fsCL is obtained from the existing falsification-aware single-succedent Gentzen-style sequent calculus GN4 for Nelson’s paradefinite (or paraconsistent) four-valued logic N4 by adding the rules of explosion and excluded middle. A falsification-aware single-succedent Gentzen-style sequent calculus GN3 for Nelson’s paracomplete three-valued logic N3 is also obtained from GN4 by adding the rule of explosion. The cut-elimination theorems for fsCL, GN3, and some of their neighbors as well as the Glivenko theorem for fsCL are proved. (shrink)

Name der Zeitschrift: Nietzscheforschung Jahrgang: 23 Heft: 1 Seiten: 13-36.

I argue that the Stoic logic is explosive. The claim applies to the Stoics' syllogistic in the strictest sense, because there is a provable syllogism which qualifies as a principle of explosion. It applies also to the general consequence operation, in the sense that every sentence is derivable from any pair containing both a sentence and the negation of the sentence. Finally, it applies to the connective of implication (conditional), in the sense that any conditional is derivable, providing its (...) antecedent is a conjunction of a sentence and the negation of the sentence. All three claims allow weakening, i.e., additions of extra premises to an inference or extra conjuncts to the antecedent of an implication, respectively. Consequently, no concept of relevance, let alone paraconsistency or connexivity is applicable to the Stoic logic; in particular, the Stoics' connective of implication is either material (Boolean) or formal (strict). (shrink)

In the mid-twentieth century when One-Dimensional Man was first published, the rapid advance of technology was already beginning to render “labor”—that is, what is known as “work”—superfluous. In 2016, half a century later, the process of “work” is being made largely redundant, if not “unnecessary”: the material truth of capitalist society that can never be uttered since as “work” disappears, so does what was one of its functional cornerstones. This article seeks to contribute to identifying some of the trends in (...) the early twenty-first century first outlined by Marcuse in One-Dimensional Man fifty years ago, in critically defining One-Dimensional Society in 2016. (shrink)

Genre discourse is widespread in appreciative practice, whether that is about hip-hop music, romance novels, or film noir. It should be no surprise then, that philosophers of art have also been interested in genres. Whether they are giving accounts of genres as such or of particular genres, genre talk abounds in philosophy as much as it does the popular discourse. As a result, theories of genre proliferate as well. However, in their accounts, philosophers have so far focused on capturing all (...) of the categories of art that we think of as genres and have focused less on ensuring that only the categories we think are genres are captured by those theories. Each of these theories populates the world with far too many genres because they call a wide class of mere categories of art genres. I call this the problem of genre explosion. In this paper, I survey the existing accounts of genre and describe the kinds of considerations they employ in determining whether a work is a work of a given genre. After this, I demonstrate the ways in which the problem of genre explosion arises for all of these theories and discuss some solutions those theories could adopt that will ultimately not work. Finally, I argue that the problem of genre explosion is best solved by adopting a social view of genres, which can capture the difference between genres and mere categories of art. (shrink)

The role of China in the world economy is constantly growing. In particular we observe that it plays more and more important role in the support of theworld economic growth (as well as high prices of certain very important commodities). In the meantime the perspectives of the Chinese economy (as well as possible fates of the Chinese society) remain unclear, whereas respective forecasts look rather contradictory. That is why the search for new aspects and modes of analysis of possible development (...) of China turns out to be rather important for the forecasting of global futures. This article employs a combination of scientific methods that imply (a) the analysis at the level of Chinese economic model; (b) the analysis at regional level (at this level the Chinese economic model is compared with the regional East Asian model); (c) the analysis at the global level that relies on the modified world-system approach that allows to answer the question whether China will replace the USA as the global leader. It is important that the analysis is conducted simultaneously in economic, social, demographic, and political dimensions. As regards the analysis of specific features of the Chinese model as an especial type of the East Asian model (that is based on the export orientation, capital & technology importation, as well as cheap labor force), we note as organic features of the Chinese model the totalitarian power of the Communist Party and the immenseness of resources. As regards special features of the Chinese model, we note (in addition to “cheap ecology” and cheap labor force) and emphasize that China has a multilevel (in a way unique) system of growth driving forces, where, as opposed to developed states, the dominant role belongs not to native private capital, but to state corporations, local authorities and foreign business. This explains the peculiarities of the Chinese investment (or rather overinvestment), which determines high growth rate up to a very significant degree. A unique feature of the Chinese model is the competition of provinces and territories for investments and high growth indicators. As regards perspectives of the global hegemony of China, we intend to demonstrate that, on the one hand, economic and political positions of China will strengthen in the forthcoming decades, but, on the other hand, China, assuming all possible future success, will be unable to take the USA position in the World System. We believe that in a direct connection with the development of globalization processes the hegemony cycle pattern is likely to come to its end, which will lead to the World System reconfiguration and the emergence of its new structure that will allow the World System to continue its further development without a hegemon. Finally, the article describes some possible scenarios of the development of China. We demonstrate that China could hardly avoid serious difficulties and critical situations (including those connected with demographic problems); however, there could be different scenarios of how China will deal with the forthcoming crisis. We also come to the conclusion that it would be better for China to achieve a slowdown to moderate growth rates (that would allow China to go through the forthcoming complex transition period with less losses) than to try to return at any cost to explosive growth rates attested in the 2000s. (shrink)

Scientific realism, the position that successful theories are likely to be approximately true, is threatened by the pessimistic induction according to which the history of science is full of suc- cessful, but false theories. I aim to defend scientific realism against the pessimistic induction. My main thesis is that our current best theories each enjoy a very high degree of predictive success, far higher than was enjoyed by any of the refuted theories. I support this thesis by showing that both (...) the amount, and quality, of scientific evidence has increased enormously in the recent past, resulting in a big boost of success for the best theories. (shrink)

The sudden appearance in the fossil record of the major animal phyla apparently records a phase of unparalleled, rapid evolution at the base of the Cambrian period, 545 Myr ago. This has become known as the Cambrian evolutionary ‘explosion’, and has fuelled speculation about unique evolutionary processes operating at that time. The acceptance of the palaeontological evidence as a true reflection of the evolutionary narrative has been criticised in two ways: from a reappraisal of the phylogenetic relationships of the (...) early fossils, and from predicitions of molecular divergence times, based on six appropriate metazoan genes. Phylogenetic analysis of the arthropods implies an earlier, Precambrian history for most clades, and hence an extensive period of cladogenesis unrecorded by fossils. A similar argument can be applied to molluscs, lophophorates and deuterostomes. Molecular evidence implies divergence between clades to at least 1000 Myr ago. The apparent paradox between the sudden appearance of recognisable metazoans and their extended evolutionary history might be explained by a sudden Cambrian increase in body size, which was accompanied by skeletisation. A new paradigm suggests that the ‘explosion’ in the record may have been decoupled from the evolutionary innovation. (shrink)

Journal Name: Semiotica Issue: Ahead of print.

In recent decades, the individual has become more and more central in both national and world cultural accounts of the operation of society. This continues a long historical process, intensified by the consolidation of a more global polity and the weakening of the primordial sovereignty of the national state. Increasingly, society is culturally rooted in the natural, historical, and spiritual worlds through the individual, rather than through corporate entities or groups. The shift has produced a proliferation and specification of individual (...) roles, accounting for what individuals do in society. It has also produced an expansion in recognized individual personhood, accounting for who individuals are in the extrasocial cosmos and fueling elaborated personal tastes and preferences. Where it has been contested, the shift to the individual has also produced a rise in specializing identities. These offer accounts of individuals' distinctive linkages to the cosmos, and they serve to bolster individual claims to standard roles and personhood. Over time, specializing identities tend to get absorbed into roles and personhood. And in turn, expanded roles and personhood provide further bases for specializing identity claims. Because many theorists mischaracterize the relationship of specializing identities to roles and personhood, the literature often overemphasizes the anomic character of the identity explosion and the closeness of the coupling between social roles and identity claims. On the contrary, specializing identities tend to be edited to remain within general rules of individual personhood and to be disconnected from the obligations involved in institutionalized roles. (shrink)

The author reappraises the legacy of Soviet philosopher of language Yuri Lotman and of his Tart—Moscow Semiotic School. She argues that he was neither a dissident nor a servant of the regime, and that he always remained a structuralist.

The Routley star, an involutive function between possible worlds or set-ups against which negation is evaluated, is a hallmark feature of Richard Sylvan and Val Plumwood's set-up semantics for the logic of first-degree entailment. Less frequently acknowledged is the weaker mate function described by Sylvan and his collaborators, which results from stripping the requirement of involutivity from the Routley star. Between the mate function and the Routley star, however, lies an broad field of intermediate semantical conditions characterizing an infinite number (...) of consequence relations closely related to first-degree entailment. In this paper, we consider the semantics and proof theory for deductive systems corresponding to set-up models in which the mate function is cyclical. We describe modifications to Anderson and Belnap's consecution calculus LE_fde2 that correspond to these constraints, for which we prove soundness and completeness with respect to the set-up semantics. Finally, we show that a number of familiar metalogical properties are coordinated with the parity of a mate function's period, including refined versions of the variable-sharing property and the property of gentle explosiveness. (shrink)