This note discusses the implications of an incorrect quotation that appeared in Ted H. Miller's article, 'Thomas Hobbes and the Constraints that Enable the Imitation of God', from Inquiry 42.2. Although surely inadvertent, this error is significant because the author uses it to support the thesis that Hobbes envisions philosophers imitating God by creating order out of chaos. The correct quotation from Leviathan does not support such a thesis, and the paragraph in Leviathan from which it is taken actually runs (...) counter to it. The correct quotation, taken in its context, and a passage from De Corpore cited by Professor Miller reveal that Hobbes encourages philosophers to imitate God by following the order of creation in contemplation. In other words, philosophers imitate God by imitating the creation. (shrink)

Two conditions for internal peace : absolutism and identification --Four approaches to Leviathan -- Outline of a new approach -- Reason, natural law, and absolutism -- The role of part 1 in Leviathan -- The metaphysical conception of human nature -- The state of nature -- The argument for absolutism -- Criteria for the identification of the sovereign -- Natural law -- Reason, revelation, and the interpretation of scripture -- Historical background : sola scriptura and biblical criticism -- Hobbes and (...) sola scriptura -- Sola scriptura and revelation -- Principles of biblical interpretation -- Metaphysics and eschatology -- Metaphysics : body and spirit -- The kingdom of God -- Eschatology -- Church and state -- Politics and the problem of double vision -- Politics and metaphysics -- Case A and the kingdom of God -- Case B and the argument for the identification of the true sovereign according to scripture -- The theological-philosophical argument for absolutism -- Hobbes and the kingdom of darkness -- The kingdom of darkness -- Misinterpretations of Scripture -- The false foundations of church tradition -- The kingdom of fairies -- The religious sincerity of Thomas Hobbes. (shrink)

Zimmerman, Brandon Review of: Thinking being: Introduction to metaphysics in the classical tradition, by Eric D. Perl, Leiden: Brill, 2014, pp. 215, $141.

In lieu of an abstract, here is a brief excerpt of the content:Reviewed by:The New Cambridge Companion to Plotinus ed. by Lloyd P. Gerson and James WilberdingBrandon ZimmermanGERSON, Lloyd P. and James Wilberding, editors. The New Cambridge Companion to Plotinus. Cambridge: Cambridge University Press, 2022. xxiv + 471 pp. Cloth, $105.00; paper, $34.99The original 1996 Cambridge Companion to Plotinus had the advantage of being one of the few systematic studies of Plotinus available and was able to recruit some of the (...) pioneers in the field to epitomize their research. In recent times, scholarship on Neoplatonism has exploded with new commentaries on and translations of Plotinus's works as well as significant studies of his Platonic predecessors and successors. Given the difficulty of following, let alone mastering, the burgeoning scholarship on late antique philosophy, The New Cambridge Companion to Plotinus is a sample of the work of current, generally younger, scholars in the field, rather than a comprehensive study of Plotinus's sources, thought, and influence.Because they address philosophical questions from a comprehensive metaphysical framework, Plotinus's treatises are difficult to group systematically. The same is true of the contributions of this volume, which elude the editors' attempts to classify them into sections. The first three essays are on historical topics. Eric Perl presents examples of how Plotinus creatively reworks material from Plato and Aristotle. Sebastian Gertz explores Plotinus's knowledge of Gnosticism, outlines his criticism of it in II.9, and speculates on whether certain criticisms were meant to apply to Christianity as well. Marije Martijn summarizes the critical reception and development of Plotinus's ideas in later pagan Neoplatonism. Little connection is made between Plotinus and the preceding Platonic and Pythagorean revivals, and nothing more is said about his reception.The order of the remaining essays is generally the inverse of Porphyry's arrangement of the Enneads, insofar as they move from the first principle downward to conclude with humanity's place in the whole. In her interpretation of Plotinus's first principle, Gwenaëlle Aubry presents the power of the One as an intermediary between it and its effects. Unlike Perl, who depicts the One as pure activity, and Gatti, who in the 1996 volume said the One is self-creative freedom, Aubry denies both freedom and activity to the One. Mauro Bonazzi and Christian Tornau both cover Plotinus's account of the divine intellect that is identical with the Forms as a response to the challenge of skepticism. Bonazzi begins with the Middle Platonic debate over Plato's first principles, while Tornau works upward from how our participation in Intellect enables us to judge the truth of sense perceptions. Svelta Slaveva-Griffin tries to show how Number is a metaphysical principle for Plotinus, suggesting that there is participated One posterior to the transcendent One. Michael Griffin rediscovers Plotinus's important place in the late antique development of Aristotle's logic. Griffin summarizes his criticisms of Aristotle's categories as being inconsistent with Aristotle's own logical principles, and then presents Plotinus's own categories (really more like transcendentals) of intelligible being and then of sensibles. Similarly, D. M. Hutchinsin's summary of Plotinus on the composition of sensible bodies highlights [End Page 349] Plotinus's valid probing of the relation between the predicables and the categories, even if Plotinus himself would reduce bodies to heaps or bundles of qualities. Damian Caluori insightfully reconstructs Plotinus's account of body–soul relations and operations as a synthesis of Aristotelian principles, Galen's anatomical discoveries, and his own understanding of the soul as an active intelligible reality. Plotinus is far more concerned about the distinct nature of bodily reality than he is often given credit for. Transcending the narrow historical focus of this volume, Pauliina Remes meditates upon and praises Plotinus's contributions to the philosophical problem of self-knowledge. Riccardo Chiaradonna ably summarizes III.7 "On Eternity and Time," but with no comments on the significance of Plotinus's teachings. James Wilberding questions whether Nature, which is the aspect of the World-Soul at work in giving the cosmos its life and form, should be considered its own level of reality (hypostasis). Jan Opsomer summarizes Plotinus's idiosyncratic teaching that matter, despite ultimately originating from... (shrink)

'Hobbes and the Imitation of God' ( Inquiry , 44, 223-6) is Eric Brandon's criticism of my article, 'Thomas Hobbes and the Constraints that Enable the Imitation of God' ( Inquiry , 42, 149-76). Brandon's criticisms are rooted in a misunderstanding of what is argued. Observations made concerning Hobbes's claims about prudence - a form of thinking Hobbes distinguishes from philosophic practice - are erroneously described by Brandon as a part of arguments concerning Hobbes's claims about (...) philosophy. Brandon's own account reaffirms a conventional interpretation by claiming that Hobbes envisioned philosophers discovering order, an interpretation challenged in the original argument. Hobbes privileged the creation of order over attempts to discover the order of the world, and this is reflected in his affinity for geometry over physics. (shrink)

1 The Zero-Force Evolutionary Law 2 Randomness, Hierarchy, and Constraint 3 Diversity 4 Complexity 5 Evidence, Predictions, and Tests 6 Philosophical Foundations 7 Implications.

Physicians place significant weight on the distinction between acts and omissions. Most believe that autonomous refusals for procedures, such as blood transfusions and resuscitation, ought to be respected, but they feel no similar obligation to accede to requests for treatment that will, in the physician’s opinion, harm the patient (e.g., assisted death). Thus, there is an asymmetry. In this paper, we challenge the strength of this distinction by arguing that the ordering of values should be the same in both cases. (...) The reason for respecting refusals is that, in such cases, autonomy outweighs well-being. We argue that the same should be true in request cases, which means that requests should not be denied only due to the treatment being too harmful in the physician’s opinion. Our strategy is to consider and reject a number of arguments for the asymmetrical view, including an appeal to the doing–allowing distinction and positive and negative rights. The duty to respect refusals is still greater than the duty to grant requests on our view, but, by arguing that the ordering of values is the same in both cases, we show that there is less of a distinction in healthcare between requests and refusals than many currently believe. (shrink)

Central aspects of Hume’s proposed “system of the sciences” as described in the Treatise are modeled on Newton’s Principia. But, as recent scholarship has suggested, Hume’s Treatise also bears a deeply subversive message with respect to Newtonian science. This chapter offers a revised overview of what Hume takes from Newton and what he rejects: The first part of the chapter argues that in the Treatise Hume adopts a version of Newton’s “analytic and synthetic method” for philosophy, thereby placing a distinctively (...) Newtonian form of explanatory reduction at the center of his own philosophical method. The second part of the chapter, on the other hand, shows that many of the most important aspects of Hume’s argument in Book 1 of the Treatise can be understood as critical of core conceptual and ontological commitments of Newton’s mechanics as developed in the Principia. (shrink)

There is much to admire in this book. It is written in a pleasingly straightforward style, and offers insight on a wide range of important issues.

Foundational theories of mental content seek to identify the conditions under which a mental representation expresses, in the mind of a particular thinker, a particular content. Normativists endorse the following general sort of foundational theory of mental content: A mental representation r expresses concept C for agent S just in case S ought to use r in conformity with some particular pattern of use associated with C. In response to Normativist theories of content, Kathrin Glüer-Pagin and Åsa Wikforss propose a (...) dilemma, alleging that Normativism either entails a vicious regress or falls prey to a charge of idleness. In this paper, I respond to this argument. I argue that Normativism can avoid the commitments that generate the regress and does not propose the sort of explanation required to charge that its explanation has been shown to be problematically idle. The regress-generating commitment to be avoided is, roughly, that tokened, contentful mental states are the product of rule-following. The explanatory task Normativists should disavow is that of explaining how it is that beliefs and other contentful mental states are produced. I argue that Normativism, properly understood as a theory of content, does not provide this kind of psychological explanation, and therefore does not entail that such explanations are to be given in terms of rule-following. If this is correct, Normativism is not the proper target of the dilemma offered by Glüer-Pagin and Wikforss. Understanding why one might construe Normativism in the way Glüer-Pagin and Wikforss must, and how, properly understood, it avoids their dilemma, can help us to appreciate the attractiveness of a genuinely normative theory of content and the importance of paying careful attention to the sort of normativity involved in norm-based theories of content. (shrink)

In this paper Wimsatt's analysis of units of selection is taken as defining the units of selection question. A definition of levels of selection is offered and it is shown that the levels of selection question is quite different from the units of selection question. Some of the relations between units and levels are briefly explored. It is argued that the levels of selection question is the question relevant to explanatory concerns, and it is suggested that it is the question (...) relevant to ontological concerns. (shrink)

In this paper I argue that we can best make sense of the practice of experimental evolutionary biology if we see it as investigating contingent, rather than lawlike, regularities. This understanding is contrasted with the experimental practice of certain areas of physics. However, this presents a problem for those who accept the Logical Positivist conception of law and its essential role in scientific explanation. I address this problem by arguing that the contingent regularities of evolutionary biology have a limited range (...) of nomic necessity and a limited range of explanatory power even though they lack the unlimited projectibility that has been seen by some as a hallmark of scientific laws. (shrink)

Several approaches to implementing symbol-like representations in neurally plausible models have been proposed. These approaches include binding through synchrony, “mesh” binding, and conjunctive binding. Recent theoretical work has suggested that most of these methods will not scale well, that is, that they cannot encode structured representations using any of the tens of thousands of terms in the adult lexicon without making implausible resource assumptions. Here, we empirically demonstrate that the biologically plausible structured representations employed in the Semantic Pointer Architecture approach (...) to modeling cognition do scale appropriately. Specifically, we construct a spiking neural network of about 2.5 million neurons that employs semantic pointers to successfully encode and decode the main lexical relations in WordNet, which has over 100,000 terms. In addition, we show that the same representations can be employed to construct recursively structured sentences consisting of arbitrary WordNet concepts, while preserving the original lexical structure. We argue that these results suggest that semantic pointers are uniquely well-suited to providing a biologically plausible account of the structured representations that underwrite human cognition. (shrink)

Drift is to evolution as inertia is to Newtonian mechanics. Both are the "natural" or default states of the systems to which they apply. Both are governed by zero-force laws. The zero-force law in biology is stated here for the first time.

In this paper we first briefly review Bell's (1964, 1966) Theorem to see how it invalidates any deterministic "hidden variable" account of the apparent indeterminacy of quantum mechanics (QM). Then we show that quantum uncertainty, at the level of DNA mutations, can "percolate" up to have major populational effects. Interesting as this point may be it does not show any autonomous indeterminism of the evolutionary process. In the next two sections we investigate drift and natural selection as the locus of (...) autonomous biological indeterminacy. Here we conclude that the population-level indeterminacy of natural selection and drift are ultimately based on the assumption of a fundamental indeterminacy at the level of the lives and deaths of individual organisms. The following section examines this assumption and defends it from the determinists' attack. Then we show that, even if one rejects the assumption, there is still an important reason why one might think evolutionary theory (ET) is autonomously indeterministic. In the concluding section we contrast the arguments we have mounted against a deterministic hidden variable account of ET with the proof of the impossibility of such an account of QM. (shrink)

This paper gives an account of evolutionary explanations in biology. Briefly, the explanations I am primarily concerned with are explanations of adaptations. These explanations are contrasted with other nonteleological evolutionary explanations. The distinction is made by distinguishing the different kinds of questions these different explanations serve to answer. The sense in which explanations of adaptations are teleological is spelled out.

In the past three decades a number of narrative self-concepts have appeared in the philosophical literature. A central question posed in recent literature concerns the embodiment of the narrative self. Though one of the best-known narrative self-concepts is a non-embodied one, namely Dennett’s self as ‘a center of narrative gravity’, others argue that the narrative self should include a role for embodiment. Several arguments have been made in support of the latter claim, but these can be summarized in two main (...) points. Firstly, a logical one: without taking the body into account Dennett’s theory becomes self-refuting. Secondly, a more practical/phenomenological point: a disembodied self-concept overlooks how personal the body is, and as such should be considered part of the self. In this paper I endorse these criticisms of non-embodied narrative self-concepts, but I argue that the relationship between the narrative self and the body is far from sufficiently fleshed out. I claim that the narrative self and the body are much more interwoven than the above criticisms suggest. What I aim to show in this paper is that the relationship between the body and the narrative self is interactive rather than unidirectional: not only does our body shape our narrative self, but our narrative self also shapes our body. The upshot of this is a better conception of the self is as a dynamic interaction between its various aspects. (shrink)

"The king is dead. Long live the king!" In early modern Europe, the king's body was literally sovereign—and the right to rule was immediately transferrable to the next monarch in line upon the king's death. In The Royal Remains, Eric L. Santner argues that the "carnal" dimension of the structures and dynamics of sovereignty hasn't disappeared from politics. Instead, it migrated to a new location—the life of the people—where something royal continues to linger in the way we obsessively track (...) and measure the vicissitudes of our flesh. Santner demonstrates the ways in which democratic societies have continued many of the rituals and practices associated with kingship in displaced, distorted, and usually, unrecognizable forms. He proposes that those strange mental activities Freud first lumped under the category of the unconscious—which often manifest themselves in peculiar physical ways—are really the uncanny second life of these "royal remains," now animated in the body politic of modern neurotic subjects. Pairing Freud with Kafka, Carl Schmitt with Hugo von Hofmannsthal,and Ernst Kantorowicz with Rainer Maria Rilke, Santner generates brilliant readings of multiple texts and traditions of thought en route to reconsidering the sovereign imaginary. Ultimately, The Royal Remains locates much of modernity—from biopolitical controversies to modernist literary experiments—in this transition from subjecthood to secular citizenship. This major new work will make a bold and original contribution to discussions of politics, psychoanalysis, and modern art and literature. (shrink)

The principle of natural selection is stated. It connects fitness values (actual reproductive success) with expected fitness values. The term 'adaptedness' is used for expected fitness values. The principle of natural selection explains differential fitness in terms of relative adaptedness. It is argued that this principle is absolutely central to Darwinian evolutionary theory. The empirical content of the principle of natural selection is examined. It is argued that the principle itself has no empirical biological content, but that the presuppositions of (...) its applicability are empirical. They form the empirical biological core of evolutionary theory. (shrink)

Darwin's theory of evolution by natural selection provided the first, and only, causal-mechanistic account of the existence of adaptations in nature. As such, it provided the first, and only, scientific alternative to the “argument from design”. That alone would account for its philosophical significance. But the theory also raises other philosophical questions not encountered in the study of the theories of physics. Unfortunately the concept of natural selection is intimately intertwined with the other basic concepts of evolutionary theory—such as the (...) concepts of fitness and adaptation —that are themselves philosophically controversial. Fortunately we can make considerable headway in getting clear on natural selection without solving all of those outstanding problems. (shrink)

Reducing health disparities and improving health outcomes are fundamental principles in global health. Environmental justice remains underrecognized and undervalued as a key driver of health dispar...

Population-level theories of evolution—the stock and trade of population genetics—are statistical theories par excellence. But what accounts for the statistical character of population-level phenomena? One view is that the population-level statistics are a product of, are generated by, probabilities that attach to the individuals in the population. On this conception, population-level phenomena are explained by individual-level probabilities and their population-level combinations. Another view, which arguably goes back to Fisher but has been defended recently, is that the population-level statistics are sui (...) generis, that they somehow emerge from the underlying deterministic behavior of the individuals composing the population. Walsh et al. label this the statistical interpretation. We are not willing to give them that term, since everyone will admit that the population-level theories of evolution are statistical, so we will call this the emergentist statistical interpretation. Our goals are to show that: This interpretation is based on gross factual errors concerning the practice of evolutionary biology, concerning both what is done and what can be done; its adoption would entail giving up on most of the explanatory and predictive projects of evolutionary biology; and finally a rival interpretation, which we will label the propensity statistical interpretation succeeds exactly where the emergentist interpretation fails. (shrink)

Barrett et al. present four puzzles for the ZFEL-view of evolution that we present in our 2010 book, Biology’s First Law: The Tendency for Diversity and Complexity to Increase in Evolutionary Systems. Our intent in writing this book was to present a radically different way to think about evolution. To the extent that it really is radical, it will be easy to misunderstand. We think Barrett et al. have misunderstood several crucial points and so we welcome the opportunity to clarify.

In this paper the common association between ontological reductionism and a methodological position called 'Mechanism' is discussed. Three major points are argued for: (1) Mechanism is not to be identified with reductionism in any of its forms; in fact, mechanism leads to a non-reductionist ontology. (2) Biological methodology is thoroughly mechanistic. (3) Mechanism is compatible with at least one form of teleology. Along the way the nature and value of scientific explanations, some recent controversies in biology and why reductionism has (...) proven to be such an attractive position are discussed. (shrink)

In this paper we discuss the two-system framework, examine its strengths, point out a fundamental weakness concerning the unity of conscious experience, and then propose a new hypothesis that avoids that weakness and other related concerns. According to our strong emergence hypothesis, what emerges are not merely mental properties in specialized, distributed neural areas, but also a new, irreducibly singular entity that functions in a recurrent manner to integrate its mental properties and to rewire its brain. We argue that the (...) former function is suggested, in part, by the effects of anesthetics on sensory integration, and that the latter function is suggested by evidence garnered from the neuroscience of mindfulness, constraint-induced movement therapy for stroke, and neuroimaging data surrounding mental illness. We then discuss how our strong emergence hypothesis relates to the description and treatment of neuropsychiatric disorders. Finally, potential objections are addressed. (shrink)

In his _Duino Elegies,_ Rainer Maria Rilke suggests that animals enjoy direct access to a realm of being—the open—concealed from humans by the workings of consciousness and self-consciousness. In his own reading of Rilke, Martin Heidegger reclaims the open as the proper domain of human existence but suggests that human life remains haunted by vestiges of an animal-like relation to its surroundings. Walter Benjamin, in turn, was to show that such vestiges—what Eric Santner calls the _creaturely_—have a biopolitical aspect: (...) they are linked to the processes that inscribe life in the realm of power and authority. Santner traces this theme of creaturely life from its poetic and philosophical beginnings in the first half of the twentieth century to the writings of the enigmatic German novelist W. G. Sebald. Sebald’s entire oeuvre, Santner argues, can be seen as an archive of creaturely life. For Sebald, the work on such an archive was inseparable from his understanding of what it means to engage ethically with another person’s history and pain, an engagement that transforms us from indifferent individuals into neighbors. An indispensable book for students of Sebald, _On Creaturely Life_ is also a significant contribution to critical theory. (shrink)

In this introduction to the life and thought of one of the most important French thinkers of the twentieth-century Eric Matthews shows how Merleau-Ponty has contributed to current debates in philosophy, such as the nature of consciousness, the relation between biology and personality, the historical understanding of human thought and society, and many others. Surveying the whole range of Merleau-Ponty's thinking, the author examines his views about the nature of phenomenology and the primacy of perception; his account of human (...) embodiment, being-in-the-world, and his understanding of human behaviour; his conception of the self and its relation to other selves; and, his views on society, politics, and the arts. A final chapter considers his later thought, published posthumously. The ideas of Merleau-Ponty are shown to be of immense importance to the development of French philosophy and the author evaluates his distinctive contributions and relates his thought to that of his predecessors, contemporaries and successors, both in France and elsewhere. This unrivalled introduction will be welcomed by philosophers and cognitive scientists as well as students taking courses in contemporary continental philosophy. (shrink)

In this book, Eric Havelock presents a challenging account of the development of the idea of justice in early Greece, and particularly of the way justice changed as Greek oral tradition gradually gave way to the written word in a literate society. He begins by examining the educational functions of poets in preliterate Greece, showing how they conserved and transmitted the traditions of society, a thesis adumbrated in his earlier book Preface to Plato. Homer, he demonstrates, has much to (...) say about justice, but since that idea is nowhere in the epics directly stated or expressed, it must be deduced from the speech and actions of the characters. Havelock's careful reading of the Iliad and the Odyssey is original and revealing; it sheds light both on Homeric notions of justice and on the Archaic Greek society depicted in the poems. As Havelock continues his inquiry from Hesiod to Aeschylus, his findings become more complex. The oral Greek world shades into a literate one. Words lose some kinds of meanings, gain others, and steadily become more suited to the conceptualization that Plato strove for and achieved. This evolution of language itself, Havelock shows, was one of the principal accomplishments of the Greek world. Lucidly written and forcefully argued, this book is a major contribution to our knowledge of ancient Greece--its politics, philosophy, and literature, from Homer to Plato. (shrink)

Genic selectionists (Williams 1966; Dawkins 1976) defend the view that genes are the (unique) units of selection and that all evolutionary events can be adequately represented at the genic level. Pluralistic genic selectionists (Sterelny and Kitcher 1988; Waters 1991; Dawkins 1982) defend the weaker view that in many cases there are multiple equally adequate accounts of evolutionary events, but that always among the set of equally adequate representations will be one at the genic level. We describe a range of cases (...) all involving stable equilibria actively maintained by selection. In these cases genotypic models correctly show that selection is active at the equilibrium point. In contrast, the genic models have selection disappearing at equilibrium. For deterministic models this difference makes no difference. However, once drift is added in, the two sets of models diverge in their predicted evolutionary trajectories. Thus, contrary to received wisdom on this matter, the two sets of models are not empirically equivalent. Moreover, the genic models get the facts wrong. (shrink)

The purpose of the article is to encourage (and in certain ways to initiate) an intellectual debate on how business schools can meet the intellectual challenge resulting from the financial crisis. We argue that this will involve questioning the traditional paradigms of management research, will require broadening the intellectual foundation of business school activities, and will trigger revision processes to incorporate the derived learning points into degree and non-degree programs. European business schools have to cope with these challenges during a (...) phase of intense financial pressures, which may create the temptation of adopting myopic development strategies. The points made in this article may appear to be explicitly prescriptive, but they should be taken as an attempt to foster an open debate on the issues vital for the future development of the business school sector. (shrink)

« Il l’appela Utopie, mot grec qui veut dire un tel lieu n’existe pas 2. »Ne vivons nous pas dans des non-lieux, sans repère où le temps qui nous reste est à la démesure des changements et des catastrophes inévitables ?Chacun dans le repli sur soi, dans l’imprévisible..

Braitenberg et al.'s view that the cerebellum contributes to multijoint sequences of movement is too narrow to account adequately for results from new anatomical, neurobehavioral, and neuroimaging studies. A broader view is that the cerebellum modulates attention, sensory, motor, and other neural systems in order to accomplish its prime function, which is to learn to predict and prepare for imminent information acquisition, analysis, or action.

This paper proposes a revision of our understanding of causation that is designed to address what Hartry Field has suggested is the central problem in the metaphysics of causation today: reconciling Bertrand Russell’s arguments that the concept of causation can play no role in the advanced sciences with Nancy Cartwright’s arguments that causal concepts are essential to a scientific understanding of the world. The paper shows that Russell’s main argument is, ironically, very similar to an argument that Cartwright has put (...) forward against the truth of universal laws of nature. The paper uses this insight to develop an account of causation that does justice to traditional views yet avoids the arguments of Russell. (shrink)

Volume 6 of The Collected Works of Eric Voegelin offers the first translation of the full German text of Anamnesis published in 1966.

These days 'evolution' is usually defined as any change in the relative frequencies of genes in a population over time. This definition and some obvious alternatives are examined and rejected. The criticism of these definitions points out the need for a more holistic analysis of genotypes. I attempt such analysis by introducing measures of similarity of whole genotypes and then by grouping genotypes into similarity classes. Three sorts of measures of similarity are examined: a measure of structural similarity, a measure (...) of functional similarity and one of relational or historical similarity. The functional approach is shown to be superior and a definition of 'evolution' is suggested. (shrink)