Iamblichus , successor to Plotinus and Porphyry, brought a new religiosity to Neoplatonism. This edition of the fragments of Iamblichus' major work on the soul, De Anima, is accompanied by the first English translation of the work and a commentary.

This collection of essays is addressed to the growing number of philosophers, classicists, and intellectual historians who are interested in the development of Greek thought after Aristotle. In nine original studies, the authors explore the meaning and history of "eclecticism" in the context of ancient philosophy. The book casts fresh light on the methodology of such central figures as Cicero, Philo, Plutarch, Sextus Empiricus, and Ptolemy, and also illuminates many of the conceptual issues discussed most creatively in this period.

We maximally extend the quantum‐mechanical results of Muller and Saunders ( 2008 ) establishing the ‘weak discernibility’ of an arbitrary number of similar fermions in finite‐dimensional Hilbert spaces. This confutes the currently dominant view that ( A ) the quantum‐mechanical description of similar particles conflicts with Leibniz’s Principle of the Identity of Indiscernibles (PII); and that ( B ) the only way to save PII is by adopting some heavy metaphysical notion such as Scotusian haecceitas or Adamsian primitive thisness. We (...) take sides with Muller and Saunders ( 2008 ) against this currently dominant view, which has been expounded and defended by many. *Received July 2008; revised May 2009. †To contact the authors, please write to: F. A. Muller, Faculty of Philosophy, Erasmus University Rotterdam, Burg. Oudlaan 50, H5–16, 3062 PA Rotterdam, The Netherlands; e‐mail: [email protected] , and Institute for the History and Foundations of Science, Utrecht University, Budapestlaan 6, IGG–3.08, 3584 CD Utrecht, The Netherlands; e‐mail: [email protected] . M. P. Seevinck, Institute for the History and Foundations of Science, Utrecht University, Budapestlaan 6, IGG–3.08, 3584 CD Utrecht, The Netherlands; e‐mail: [email protected]. (shrink)

Context: The dominant approach to the study of perception is representational/computational, with an emphasis on the achievements of the brain and the nervous system, which are taken to construct internal models of the world. Alternatives include ecological, embedded, embodied, and enactivist approaches, all of which emphasize the centrality of action in understanding perception. Problem: Despite sharing many theoretical commitments that lead to a rejection of the classical approach, the alternatives are characterized by important contrasts and points of divergence. Here we (...) focus on the enactive and ecological approaches, in particular, on how they construe the status of the environment and the content of perception. Method: We begin with a review of James Gibson’s ecological psychology, highlighting it as a psychology for all organisms not just humans. Against this backdrop, we consider enactivist arguments against direct perception - a central assertion of the ecological approach - and in favor of interpreting the activity of perceptual agents as a kind of construction of a perceptually meaningful world. Results: We assess the merits of this interpretation and we conclude that it cannot be grounded on fundamental principles such as thermodynamics and organism-environment mutuality. Implications: As a consequence, enactivism remains close to representationalism and entails a form of dualism. Constructivist content: We advance a criticism of the constructivist foundations of the enactive approach to perception. Perception-action mutuality at the heart of enactivism does not require mental construction; indeed, perception-action mutuality obviates construction. (shrink)

The question contrasts two ways of expressing the role of the sense organ in perception. In one the expression referring to the sense organ is put into the dative case ; the other is a construction with the preposition δiá governing the genitive case of the word for the sense organ.

Many research ethics guidelines now oblige researchers to offer research participants the results of research in which they participated. This practice is intended to uphold respect for persons and ensure that participants are not treated as mere means to an end. Yet some scholars have begun to question a generalised duty to disclose research results, highlighting the potential harms arising from disclosure and questioning the ethical justification for a duty to disclose, especially with respect to individual results. In support of (...) this view, we argue that current rationales for a duty of disclosure do not form an adequate basis for an ethical imperative. We review policy guidance and scholarly commentary regarding the duty to communicate the results of biomedical, epidemiological and genetic research to research participants and show that there is wide variation in opinion regarding what should be disclosed and under what circumstance. Moreover, we argue that there is fundamental confusion about the notion of “research results,” specifically regarding three core concepts: the distinction between aggregate and individual results, amongst different types of research, and across different degrees of result veracity. Even where policy guidance and scholarly commentary have been most forceful in support of an ethical imperative to disclose research results, ambiguity regarding what is to be disclosed confounds ethical action. (shrink)

Theaetetus, asked what knowledge is, replies that geometry and the other mathematical disciplines are knowledge, and so are crafts like cobbling. Socrates points out that it does not help him to be told how many kinds of knowledge there are when his problem is to know what knowledge itself is, what it means to call geometry or a craft knowledge in the first place—he insists on the generality of his question in the way he often does when his interlocutor, asked (...) for a definition, cites instead cases of the concept to be defined. (shrink)

In this paper, I explore a seldom-recognized connection between the ontology of abstract objects and a current issue in the philosophy of chemistry. Specifically, I argue that realism with regard to universals implies a view of chemical elements similar to F.A. Paneth’s thesis about the dual nature of the concept of element.

We review some of the essential novel ideas introduced by Bohm through the implicate order and indicate how they can be given mathematical expression in terms of an algebra. We also show how some of the features that are needed in the implicate order were anticipated in the work of Grassmann, Hamilton, and Clifford. By developing these ideas further we are able to show how the spinor itself, when viewed as a geometric object within a geometric algebra, can be given (...) a meaning which transcends the notion of the usual metric geometry in the sense that it must be regarded as an element of a broader and more general pregeometry. (shrink)

M. F. Burnyeat taught for 14 years in the Philosophy Department of University College London, then for 18 years in the Classics Faculty at Cambridge, 12 of them as the Laurence Professor of Ancient Philosophy, before migrating to Oxford in 1996 to become a Senior Research Fellow in Philosophy at All Souls College. The studies, articles and reviews collected in these two volumes of Explorations in Ancient and Modern Philosophy were all written, and all but two published, before that decisive (...) change. Whether designed for a scholarly audience or for a wider public, they range from the Presocratics to Augustine, from Descartes and Bishop Berkeley to Wittgenstein and G. E. Moore. Their subject-matter falls under four main headings: 'Logic and Dialectic' and 'Scepticism Ancient and Modern', which make up the first volume, with 'Knowledge' and 'Philosophy and the Good Life' contained in this, the second volume. The title 'Explorations' well expresses Burnyeat's ability to discover new aspects of familiar texts, new ways of solving old problems. In his hands the history of philosophy becomes itself a philosophical activity. (shrink)

"M. F. Simone Roberts's A Poetics of Being-Two is animated by a lively and engaging voice, drawing readers in with a sense of serious purpose working (delightfully) in tandem with a sense of humor. Roberts's aesthetics and her close readings of Yves Bonnefoy, St-John Perse, and Jorie Graham clearly demonstrate the literary effectiveness of Irigarayan sexual difference as an analytic trope, even as they emphasize the philosophical and political possibilities sexual difference opens up for feminism, environmentalism, and all levels of (...) contemporary cultural critique and activism."—Gail M. Schwab, Hofstra University -/- In An Ethics of Sexual Difference, Irigaray calls for a new poetics in the sense of both art and life. Rather than a critique from within philosophy, A Poetics of Being-Two tests Irigaray's ethics by extending it to other sites of cultural production. Where Irigaray's method finds stirrings and repressions of sexual difference in philosophy, this project explores that tension in poetics. Building from Irigaray's ethics, the book describes a poetics of being-two as concerns gendered subjectivity in literary poetics and then traces the on-going emergence of a poetics of being-two in the post-symbolist poetic tradition. Irigaray scholars will be interested in the sustained interpolation of Irigaray's ethical concepts as principles for a critical aesthetics and in their hermeneutic application in reading a literary tradition. Readers in comparative literature will find the first sustained feminist engagements with the major French poets Bonnefoy and Perse and an elucidation of their influence on the Pulitzer Prize winning poet Jorie Graham. (shrink)

Background: Informed consent is regarded as a contract between autonomous and equal parties and requires the elements of information disclosure, understanding, voluntariness and consent. The validity of informed consent for critically ill patients has been questioned. Little is known about how these patients experience the process of consent.Objective: The aim of this study was to explore critically ill patients’ experience with the principle of informed consent in a clinical trial and their ability to give valid informed consent.Design: 11 stroke patients (...) who had been informed about thrombolytic treatment and had been through the process of deciding whether or not to participate in a thrombolysis trial went through repeated qualitative semistructured interviews.Results: None of the patients had any clear understanding of the purpose of the trial. Neither did they understand the principles of randomisation and voluntariness. Reasons for giving or not giving consent were trust, conceptions of benefits and risks and altruism. Several patients found it immoral to involve patients in the consent procedure and argued that this was the doctors’ responsibility. Others argued that it is a duty to question patients and perceived it as a sign of being treated with respect and dignity. A majority of the patients found the consent process vague and ambiguous.Conclusions: The results indicate that the principle of informed consent from critically ill patients cannot be seen as a contract between equal and autonomous parties. Further studies are needed to explore critically ill patients’ experiences with the process of informed consent. (shrink)

The framework of this paper is a defence of Burnet's construal of Apology 30b 2-4. Socrates does not claim, as he is standardly translated, that virtue makes you rich, but that virtue makes money and everything el se good for you. This view of the relation between virtue and wealth is paralleled in dialogues of every period, and a sophisticated development of it appears in Aristotle. My philological defence of the philosophically preferable translation extends recent scholarly work on eínai in (...) Plato and Aristotle to gígnesthai, which is the main verb in the disputed sentence. When attached to a subject, both verbs make a complete statement on their own, but a statement that is further completable by adding a complement. The important point is that the addition of a complement does not change the meaning of the verb from existence to the copula. Proving this is a lengthy task which takes me into some of the deeper reaches of Platonic and Aristotelian ontology, and into discussion of whether Greek ever acquired a verb that corresponds to modem verbs of existence. I conclude that even when later authors such as Philo Judaeus, Sextus Empiricus and Plotinus debate what we naturally translate as issues of existence, none of the verbs they use (eínai, úpárkhein, úphestekénai) can be said to have existential meaning. (shrink)

It has been proposed that the implicate order can be given mathematical expression in terms of an algebra and that this algebra is similar to that used in quantum theory. In this paper we bring out in a simple way those aspects of the algebraic formulation of quantum theory that are most relevant to the implicate order. By using the properties of the standard ket introduced by Dirac we describe in detail how the Heisenberg algebra can be generalized to produce (...) an algebraic structure in which it is possible to describe space translations in a way that is analogous to the description of rotations in a Clifford algebra. This approach opens up the possibility of going beyond the limits of the present quantum formalism and we discuss briefly some of the new implications. (shrink)

Philosophical Thought in Russia in the Second Half of the 20th Century is the first book of its kind that offers a systematic overview of an often misrepresented period in Russia's philosophy. Focusing on philosophical ideas produced during the late 1950s – early 1990s, it reconstructs the development of genuine philosophical thought in the Soviet period and introduces those non-dogmatic Russian thinkers who saw in philosophy a means of reforming social and intellectual life. Covering such areas of philosophical inquiry as (...) philosophy of science, philosophical anthropology, the history of philosophy, activity approach as well as communication and dialogue studies, the volume presents and thoroughly discusses central topics and concepts developed by Soviet thinkers in that particular fields. Written by a team of internationally recognized scholars from Russia and abroad, it examines the work of well-known Soviet philosophers (such as Mikhail Bakhtin, Evald Ilyenkov and Merab Mamardashvili) as well as those important figures (such as Vladimir Bibler, Alexander Zinoviev, Yury Lotman, Georgy Shchedrovitsky, Genrich Batishchev, Sergey Rubinstein, and others) who have often been overlooked. By introducing and examining original philosophical ideas that evolved in the Soviet period, the book confirms that not all Soviet philosophy was dogmatic and tied to orthodox Marxism and the ideology of Marxism-Leninism. It shows Russian philosophical development of the Soviet period in a new light, as a philosophy defined by a genuine discourse of exploration and intellectual progress, rather than stagnation and dogmatism. In addition to providing the historical and cultural background that explains the development of the 20th-century Russian philosophy, the book also puts the discussed ideas and theories in the context of contemporary philosophical discussions showing their relevance to nowadays debates in Western philosophy. With short biographies of key thinkers, an extensive current bibliography and a detailed chronology of Soviet philosophy, this research resource provides a new understanding of the Soviet period and its intellectual legacy 100 years after the Russian Revolution. (shrink)

The breadth and depth of the Platonic tradition, from Antiquity through to the early Middle Ages, is evidenced by the studies gathered in this volume, written by an international team of contributors in honour of John Dillon. The first papers, on Plato, include a discussion of the problem of evil and of the theme of love n the Symposium. There follows a section of the Middle-Platonists, dealing with how this tradition adapted and developed themes such as the world-soul as (...) a mirror and the notion of an intellible cosmos. Five papers then focus on aspects of the thought of Plotinus, and a final group covers the later Neoplatonic tradition, from Augustine to John Scotus Eriugena, including a survey by the late Henry Blumenthal on perception and memory. (shrink)

In the course of its 53 Stephanus pages Plato's Protagoras uses the verb διαλέγεσθαι 32 times: a frequency considerably greater than that of any other dialogue. The next largest total is 21 occurrences in the Theaetetus. In the vast bulk of the Republic διαλέγεσθαι occurs just 20 times over 294 Stephanus pages. The ratios are striking. In the Protagoras the verb turns up on average once every 1.65 Stephanus pages; in the Theaetetus once every 3.25 pages; in the Republic only (...) once every 14.7. The statistics reflect a fact evident to any reader of the Protagoras and Theaetetus, that the first of these dialogues is Plato's most sustained treatment of the comparative merits of the many different forms of διαλέγεσθαι, the second his most ambitious exhibition of the type of dialectic with which Socrates there wins his contest against Protagoras. It is the former dialogue that interests me here. (shrink)

Since the arguments that Plato provides in the Republic for the thesis that the human soul consist of three parts (reason, spirit, appetite) are notoriously problematic, I propose other reasons for accepting tripartition: reasons that we too could endorse, or at least entertain with some sympathy. To wit, (a) the appetitive part of Plato's divided soul houses desires and tendencies we have because we are animal bodies programmed to survive (as individuals and as a species) in disequilibrium with a variegated, (...) often varying environment, (b) the spirited middle part houses status concerns that belong to us as social animals, while (c) what makes us rational animals is a faculty of reason, conceived in strikingly non-Humean terms, which determines what is best all things considered. Other psychic tendencies may then be explained in terms of the education and mutual interaction of the three parts we are 'programmed' for from birth. (shrink)

This article provides an introduction to the articles in this theme issue. This collection examines epistemological, ontological, moral and political questions in medicine in light of the philosophical ideas of Charles Taylor. A synthesis of Taylor's relevant work is presented. Taylor has argued for a conception of the human sciences that regards human life as meaningful–deriving meaning from surrounding horizons of significance. An overview of the interdisciplinary articles in this issue is presented. This collection advances our thinking in the philosophy (...) of medicine as well as the philosophy of Charles Taylor. (shrink)

This article considers how legislators should respond to evidence that identifies a common and widely accepted parental practice as a potential source of harm to children, using domestic exposure to environmental tobacco smoke as a test case. It is claimed that children are parties to the Harm Principle, and that the State has an obligation to protect children from exposure to harm. Parental prerogative is limited by the need to avoid harming children. That said, there is considerable uncertainty about what (...) is harmful to children. Several sources of uncertainty, both empirical and conceptual, are explored, in order to demonstrate the complexity of the task legislators face. Seven considerations that are relevant to decisions about legislation of harmful parental practices are outlined, and these considerations are then employed to assess the case in favour of legislating to prohibit the exposure of children to environmental tobacco smoke in domestic settings. (shrink)

Background: Expanded newborn screening generates incidental results, notably carrier results. Yet newborn screening programmes typically restrict parental choice regarding receipt of this non-health serving genetic information. Healthcare providers play a key role in educating families or caring for screened infants and have strong beliefs about the management of incidental results. Methods: To inform policy on disclosure of infant sickle cell disorder (SCD) carrier results, a mixed-methods study of healthcare providers was conducted in Ontario, Canada, to understand attitudes regarding result management (...) using a cross-sectional survey (N = 1615) and semistructured interviews (N = 42). Results: Agreement to reasons favouring disclosure of SCD carrier results was high (65.1%–92.7%) and to reasons opposing disclosure was low (4.1%–18.1%). Genetics professionals expressed less support for arguments favouring disclosure (35.3%–78.8%), and more agreement with arguments opposing disclosure (15.7%–51.9%). A slim majority of genetics professionals (51.9%) agreed that a reason to avoid disclosure was the importance of allowing the child to decide to receive results. Qualitatively, there was a perceived “duty” to disclose, that if the clinician possessed the information, the clinician could not withhold it. Discussion: While a majority of respondents perceived a duty to disclose the incidental results of newborn screening, the policy implications of these attitudes are not obvious. In particular, policy must balance descriptive ethics (ie, what providers believe) and normative ethics (ie, what duty-based principles oblige), address dissenting opinion and consider the relevance of moral principles grounded in clinical obligations for public health initiatives. (shrink)

The Heirs of Plato is the first full study of the various directions in philosophy taken by Plato's followers in the first seventy years after his death in 347 BC - the period generally known as 'The Old Academy', unjustly neglected by historians of philosophy. Lucid and accessible, John Dillon's book provides an introductory chapter on the school itself, and a summary of Plato's philosophical heritage, before looking at each of the school heads and other chief characters, exploring both (...) what holds them together and what sets them apart. (shrink)

Upshot: Gibsonian and enactivist thinkers appear to diverge primarily with respect to the emphasis placed on the contributions of the organism to perception-action. Enactivists claim that a fundamental asymmetry in the organism-environment relationship should be credited for the existence of meaning in the world. Gibsonians counter that theory must reckon with both the asymmetry and symmetry between organism and environment as well as with the role of specificational information in underwriting their coordination.

Objectives: Efficient procedures for obtaining informed (proxy) consent may contribute to high influenza vaccination rates in nursing homes. Yet are such procedures justified? This study’s objective was to gain insight in informed consent policies in Dutch nursing homes; to assess how these may affect influenza vaccination rates and to answer the question whether deviating from standard informed consent procedures could be morally justified. Design: A survey among nursing home physicians. Setting & Participants: We sent a questionnaire to all (356) nursing (...) homes in the Netherlands, to be completed by one of the physicians. Results: We received 245 completed questionnaires. As 21 institutions appeared to be closed or merged into other institutions, the response was 73.1% (245/335). Of all respondents 81.9% reported a vaccination rate above 80%. Almost 50% reported a vaccination rate above 90%. Most respondents considered herd immunity to be an important consideration for institutional policy. Freedom of choice for residents was considered important by almost all. Nevertheless, 106 out of 245 respondents follow a tacit consent procedure, according to which vaccination will be administered unless the resident or her proxy refuses. These institutions show significantly higher vaccination rates (p < 0.03). Conclusions: In our discussion we focus on the question whether tacit consent procedures can be morally justifiable. Such procedures assume that vaccination is good for residents either as individuals or as a group. Even though this assumption may be true for most residents, there are good reasons for preferring express consent procedures. (shrink)

Purpose: In the educational field a lack of focus on the process of arriving at a level of profound understanding of a phenomenon can be observed. While classical approaches in education focus on "downloading," repeating, or sometimes optimizing relatively stable chunks of knowledge (both facts and procedural knowledge), this paper proposes to shift the center of attention towards a more dynamic and constructivist perspective: learning as a process of individual and collective knowledge creation and knowledge construction. The goal of this (...) process is to profoundly understand a phenomenon in its multi-dimensionality and complexity and to reflect on the processes that have lead to this understanding. The issue we want to tackle in this paper is how this profound understanding can be brought about in a technology-enhanced learning environment. Method: Part 1 of this paper explores strategies of technology-enhanced knowledge sharing/creation in the field of higher education. Part 2 presents a successful blended learning scenario that illustrates the implementation of these learning strategies in a concrete course design. In this case study students are involved in active theory construction processes by conducting virtual experiments with a virtual organism. Part 3 elaborates on the epistemological implications of this case study. Findings: A constructivist framework for modes of knowing and modes of coming to know is developed. It is shown that -- in order to reach a profound understanding of a phenomenon -- it is essential to take into account the multi-facetted character of knowledge and to use the strategy of double-loop learning. Conclusion: This leads to an understanding of learning/teaching as a process of socio-epistemological engineering. Furthermore, the role of the teacher changes in such a constructivist setting of learning/teaching: Their primary task is to provide a "pedagogically (and technologically) augmented environment." They are responsible for creating an atmosphere of collective knowledge construction and reflection. Beyond the role of a coach and moderator the teacher has to act as a facilitator or "enabler" for the (individual and collective) processes of double-loop learning. (shrink)

Context: Radical constructivism (RC) is seen as a fruitful way to teach innovation, as Ernst von Glasersfeld’s concepts of knowing, learning, and teaching provide an epistemological framework fostering processes of generating an autonomous conceptual understanding. Problem: Classical educational approaches do not meet the requirements for teaching and learning innovation because they mostly aim at students’ competent performance, not at students’ understanding and developing their creative capabilities. Method: Analysis of theoretical principles from the constructivist framework and how they can be used (...) as a foundation for designing a course in the field of innovation. The empirical results are based on qualitative journal entries that were coded and categorized according to Charmaz’s grounded theory approach. Results: It is shown that there is a close relationship between learning and innovation processes. The proposed investigated course design based on RC incorporates the following concepts: the course setting is understood as a framework to guide understanding; students work in teams and are subjective constructors of their own knowledge; instructors take on the role of coaches, guiding students through an innovation process as co-creators. Such a framework facilitates dynamic processes of assimilation and accommodation, as well as perturbation through the “other,” which potentially lead to novel, and viable, conceptual structures crucial for sustainable innovation. Constructivist Content: The paper argues in favor of RC principles in the context of teaching and learning. The proposed course setting is oriented at von Glasersfeld’s understanding of knowing, learning, and teaching (vs. training. It outlines theoretical and practical aspects of these principles in the context of a course design for innovation. Furthermore, it shows the importance of von Glasersfeld’s concept of intersubjectivity for processes of accommodation and the generation of (novel) autonomous conceptual structures. The interplay between creating coherence, perturbation, and irritation through interacting with the “other” (in the form of co-students and instructors) is assumed to be vital for such processes, as it leads to the creation of not only novel but also viable conceptual structures, therefore re-establishing a relative equilibrium critical for sustainable innovation. (shrink)

In a recent issue of this journal, P.E. Vermaas ([2005]) claims to have demonstrated that standard quantum mechanics is technologically inadequate in that it violates the 'technical functions condition'. We argue that this claim is false because based on a 'narrow' interpretation of this technical functions condition that Vermaas can only accept on pain of contradiction. We also argue that if, in order to avoid this contradiction, the technical functions condition is interpreted 'widely' rather than 'narrowly', then Vermaas, argument for (...) his claim collapses. The conclusion is that Vermaas' claim that standard quantum mechanics is technologically inadequate evaporates. (shrink)

Completeness is an important but misunderstood norm of explanation. It has recently been argued that mechanistic accounts of scientific explanation are committed to the thesis that models are complete only if they describe everything about a mechanism and, as a corollary, that incomplete models are always improved by adding more details. If so, mechanistic accounts are at odds with the obvious and important role of abstraction in scientific modelling. We respond to this characterization of the mechanist’s views about abstraction and (...) articulate norms of completeness for mechanistic explanations that have no such unwanted implications. _1_ Introduction _2_ A Balancing Act: When Do Details Matter? _3_ The Norms of Causal Explanation _4_ The Norms of Constitutive Explanation _5_ Salmon-Completeness _6_ From More Details to More Relevant Details _7_ Non-explanatory Virtues of Abstraction _8_ From Explanatory Models to Explanatory Knowledge _9_ Mechanistic Completeness Reconsidered _10_ Conclusion. (shrink)

Atiyah and Sutcliffe made a number of conjectures about configurations of N distinct points in hyperbolic 3-space, arising from ideas of Berry and Robbins. In this paper we prove all these conjectures, purely geometrically, but we also provide a physical interpretation in terms of Electrons.

It is, I think, a fair presumption to suppose that there was some bond uniting all the different aspects of Pythagoras' thought, a bond strong enough to satisfy Pythagoras himself, but loose enough for the S0009838800001488_inline1 to be able, later, to cast off the religious and mystical doctrines without endangering the rest.

Open peer commentary on the article “Going Beyond Theory: Constructivism and Empirical Phenomenology” by Urban Kordeš. Upshot: A constructivist epistemology might help us better understand what kind of knowledge expert introspection cannot deliver. Indeed, there are well-known trade-offs with regard to the insights that can be gained through introspection. If trivialization is to be avoided, then it should be assumed that, contrary to standard science, introspection just is not a declarative kind of knowledge.

When a set of closed intervals of the reals is partially ordered by decreeing that A (...) such lattices of finite length. Characterizations are given of when these lattices are modular or distributive, as well as when they are semiorders. The theory is of some interest because the completion by cuts of an interval order is necessarily an interval order lattice. Though it is shown that the completion by cuts of a semiorder need not be a semiorder, necessary and sufficient conditions are given for a lattice of finite length to be isomorphic to the completion by cuts of a semiorder. (shrink)