In this paper, I put forward a benchmark account of emergence in terms of non-explainability and explicate the relationship that exists between its synchronic and diachronic declinations. I develop an argument whose conclusion is that emergence is essentially a “two-faceted” notion, i.e. it always encapsulates both synchronic and diachronic dimensions. I then compare this account with alternative recent accounts of emergence that define the concept through the notion of unpredictability or topological non-equivalence.

Observational learning can enhance the acquisition and performance quality of complex motor skills. While an extensive body of research has focused on the benefits of synchronous (i.e., concurrent physical practice) and non-synchronous (i.e., delayed physical practice) observational learning strategies, the question remains as to whether these approaches differentially influence performance outcomes. Accordingly, we investigate the differential outcomes of synchronous and non-synchronous observational training contexts using a novel dance sequence. Using multidimensional cross-recurrence quantification analysis, movement time-series were (...) recorded for novice dancers who either synchronised with (n = 22) or observed and then imitated (n = 20) an expert dancer. Participants performed a 16-count choreographed dance sequence for 20 trials assisted by the expert, followed by one final, unassisted performance trial. Although end-state performance did not significantly differ between synchronous and non-synchronous learners, a significant decline in performance quality from imitation to independent replication was shown for synchronous learners. A non-significant positive trend in performance accuracy was shown for non-synchronous learners. For all participants, better imitative performance across training trials led to better end-state performance, but only for the accuracy (and not timing) of movement reproduction. Collectively, the results suggest that synchronous learners came to rely on a realtime mapping process between visual input from the expert and their own visual and proprioceptive intrinsic feedback, to the detriment of learning. Thus, the act of synchronising alone does not ensure an appropriate training context for advanced sequence learning. (shrink)

The main focus of this paper is on the notion of transtemporal identity applied to quantum particles. I pose the question of how the symmetrization postulate with respect to instantaneous states of particles of the same type affects the possibility of identifying interacting particles before and after their interaction. The answer to this question turns out to be contingent upon the choice between two available conceptions of synchronic individuation of quantum particles that I call the orthodox and heterodox approaches. I (...) argue that the heterodox approach offers a better explanation of the known experimental facts regarding particle interactions, and I probe deeper the concepts of synchronic and diachronic identity emerging from this approach. (shrink)

Reasoning is an activity of ours by which we come to satisfy synchronic requirements of rationality. However, reasoning itself is regulated by diachronic permissions of rationality. For each synchronic requirement there appears to be a corresponding diachronic permission, but the requirements and permissions are not related to each other in a systematic way. It is therefore a puzzle how reasoning according to permissions can systematically bring us to satisfy requirements.

The topic of synchronicity has long intrigued philosophers, scientists, and the general public. However, to date very little empirical research has explored the underlying mechanisms of synchronicity. In other words, why do synchronicities occur? Are synchronicities random, or do they hold clues about the ultimate nature of reality? Drawing on theoretical and empirical research, the current paper explores the idea that synchronicity might be one way that the fundamental (i.e. ontologically primary) nature of consciousness reveals itself to us in everyday (...) life, and that contemplative practices such as meditation might be capable of invoking synchronicity. In addition, this paper aims to summarize theoretical perspectives on synchronicity in an attempt to spark a renewed interest in conducting empirical research on this topic, arguing for a thoughtful consideration of post-materialist perspectives in an attempt to innovate within the field of consciousness studies and shed light on the ontological questions raised by synchronicity. (shrink)

I discuss here a number of different kinds of diachronic emergence, noting that they differ in important ways from synchronic conceptions. I argue that Bedau’s weak emergence has an essentially historical aspect, in that there can be two indistinguishable states, one of which is weakly emergent, the other of which is not. As a consequence, weak emergence is about tokens, not types, of states. I conclude by examining the question of whether the concept of weak emergence is too weak and (...) note that there is at present no unifying account of diachronic and synchronic concepts of emergence. (shrink)

This paper distinguishes between synchronic responsibility (SR) and diachronic responsibility (DR). SR concerns an agent’s responsibility for an act at the time of the action, while DR concerns an agent’s responsibility for an act at some later time. While most theorists implicitly assume that DR is a straightforward matter of personal identity, I argue instead that it is grounded in psychological connectedness. I discuss the implications this distinction has for the concepts of apology, forgiveness, and punishment as well as the (...) way in which this distinction can be used to defend quality of will accounts of responsibility against objections involving psychological manipulation. I argue that the intuition that a manipulated agent is not responsible can be explained by appeal to the conditions of DR and, as such, does not unproblematically shed light on the conditions of SR. (shrink)

This study examines the filiation of a philosophical concept in relation to its use by the major 20th century thinker C.G. Jung. It shows how Jung's theory of synchronicity stems from a long and deep preoccupation with such central themes as the mind-body problem.

This book is parapsychological study of the meaningful coincidence of events, extrasensory perception, and similar phenomena.

An agent exercises instrumental rationality to the degree that she adopts appropriate means to achieving her ends. Adopting appropriate means to achieving one’s ends can, in turn, involve overcoming one’s strongest desires, that is, it can involve exercising synchronic self-control. However, contra prominent approaches, I deny that synchronic self-control is possible. Specifically, I draw on computational models and empirical evidence from cognitive neuroscience to describe a naturalistic, multi-system model of the mind. On this model, synchronic self-control is impossible. Must we, (...) then, give up on a meaningful conception of instrumental rationality? No. A multi-system view still permits something like synchronic self-control: an agent can control her very strong desires. Adopting a multi-system model of the mind thus places limitations on our conceptions of instrumental rationality, without requiring that we abandon the notion altogether. (shrink)

Saul Kripke argued that the requirement that knowledge eliminate all possibilities of error leads to dogmatism . According to this view, the dogmatism puzzle arises because of a requirement on knowledge that is too strong. The paper argues that dogmatism can be avoided even if we hold on to the strong requirement on knowledge. I show how the argument for dogmatism can be blocked and I argue that the only other approach to the puzzle in the literature is mistaken.

With fascinating historical anecdotes and incisive scientific analysis, this important work combines ancient thought with modern theory to reveal a new way of viewing our universe that can expand our awareness, our lives, and may well point the way to a new science for the twenty-first century.

The human brain consists of approximately 100 billion electrically active neurones that generate an endogenous electromagnetic field, whose role in neuronal computing has not been fully examined. The source, magnitude and likely influence of the brain's endogenous em field are here considered. An estimate of the strength and magnitude of the brain's em field is gained from theoretical considerations, brain scanning and microelectrode data. An estimate of the likely influence of the brain's em field is gained from theoretical principles and (...) considerations of the experimental effects of external em fields on neurone firing both in vitro and in vivo. Synchronous firing of distributed neurones phase-locks induced em field fluctuations to increase their magnitude and influence. Synchronous firing has previously been demonstrated to correlate with awareness and perception, indicating that perturbations to the brain's em field also correlate with awareness. The brain's em field represents an integrated electromagnetic field representation of distributed neuronal information and has dynamics that closely map to those expected for a correlate of consciousness. I propose that the brain's em information field is the physical substrate of conscious awareness - the cemi field - and make a number of predictions that follow from this proposal. Experimental evidence pertinent to these predictions is examined and shown to be entirely consistent with the cemi field theory. This theory provides solutions to many of the intractable problems of consciousness - such as the binding problem - and provides new insights into the role of consciousness, the meaning of free will and the nature of qualia. It thus places consciousness within a secure physical framework and provides a route towards constructing an artificial consciousness. (shrink)

Restricting attention to the class of extensive games defined by von Neumann and Morgenstern with the added assumption of perfect recall, we specify the information of each player at each node of the game-tree in a way which is coherent with the original information structure of the extensive form. We show that this approach provides a framework for a formal and rigorous treatment of questions of knowledge and common knowledge at every node of the tree. We construct a particular information (...) partition for each player and show that it captures the notion of maximum information in the sense that it is the finest within the class of information partitions that satisfy four natural properties. Using this notion of “maximum information” we are able to provide an alternative characterization of the meet of the information partitions. (shrink)

To note that the study of Sanskrit narrative literature, in particular the Epics and Purāṇas, has been plagued with the propensity towards diachronic dissection would be little more than a truism in most scholarly circles. Yet it is with this truism we are forced to begin as we strive to shed the old skin of colonial era receptions of these texts. While there have been notable efforts made to embrace Sanskrit narrative as synchronic wholes, there isn’t much in the way (...) of a systematic methodology for doing so. This paper, therefore, is aimed at charting a methodology for synchronic study of Sanskrit narrative literature, paying particular attention to narrative frames. It advances five avenues of thematic import based on the structure of Sanskrit narrative: inception import, association import, exposition import, framing import, and impetus import. Examples are primarily drawn primarily from the Mahābhārata and the Mārkaṇḍeya Purāṇa. Note that key terms arising from the discussion in this chapter are bolded throughout and appear in a “terminology guide” appended to the end of this study for the sake of reader reference. (shrink)

This paper explicates two notions of emergencewhich are based on two ways of distinguishinglevels of properties for dynamical systems.Once the levels are defined, the strategies ofcharacterizing the relation of higher level to lower levelproperties as diachronic and synchronic emergenceare the same. In each case, the higher level properties aresaid to be emergent if they are novel or irreducible with respect to the lower level properties. Novelty andirreducibility are given precise meanings in terms of the effectsthat the change of a bifurcation (...) or perturbation parameterin the system has. (The same strategy can be applied to otherways of separating levels of properties, like themicro/macro distinction.)The notions of emergence developed here are notions of emergencein a weak sense: the higher level emergent properties wecapture are always structural properties (or are realized insuch properties), that is, they are defined in terms of the lowerlevel properties and their relations. Diachronic and synchronicemergent properties are distinctions within thecategory of structural properties. (shrink)

Does a free agent have the power to will otherwise even at the very moment she is making a particular free choice? That is, when one is freely making some choice at a time T, does one also have the power to refrain from so choosing at T? The diachronic account of contingency and freedom says “no,” while the synchronic account says “yes.” In this paper I first address William Hasker’s criticisms of my earlier presentation of the synchronic account, and (...) then present an argument against the diachronic account. If successful, my arguments offer support for the compatibility of human freedom and divine foreknowledge. (shrink)

Carl Jung coined the term "synchronicity" to describe meaningful coincidences that conventional notions of time and causality cannot explain. Working with the great quantum physicist Wolfgang Pauli, Jung sought to reveal these coincidences as phenomena that involve mind and matter, science and spirit, thus providing rational explanations for parapsychological events like telepathy, precognition, and intuition. Synchronicity examines the work of Jung and Pauli, as well as noted scientists Werner Heisenberg and David Bohm; identifies the phenomena in ancient and modern mythologies, (...) particularly the Greek legend of Hermes the Trickster; and illustrates it with engaging anecdotes from everyday life and literature. (shrink)

In this essay, I discuss the reports and results of recent official studies of UFOs, and argue they may pose a challenge to contemporary science, religion, and secularity. While the question of UFOs has been well addressed with respect to religion, this essay, which is also a report on current research, highlights the challenge to secularity and some of its constitutive practices. It aims to show how current knowledge on UFOs renders both science and religion uncanny, placing them in a (...) domain where they become irreducibly strange while unshakably familiar, pushing us to (re)consider some of the secular premises of the social sciences (e.g., anthropology) and the humanities (e.g., religious studies), and the possible need for new analytics. (shrink)

In this chapter I argue that the necessity of the present counts against theories of synchronic free will, according to which a person may have free will at a time t0 even once that person has decided at t0 to do something. I defend the theory of diachronic free will against recent critiques drawn from the work of Michael Rota and Katherin Rogers. And I chart some of the implications for the philosophy of religion.

Interpersonal disagreement happens all the time. How to properly characterize interpersonal disagreement and how to respond to it are important problems, but the existence of such disagreements at least is obvious. The existence of intrapersonal disagreement, however, is another matter. On the one hand, we do change our minds sometimes, especially when new evidence comes in, and so there is a clear enough sense in which we can be characterized as having disagreements with our past selves. But what about synchronic (...) disagreements with ourselves? Are such cases possible, or is there something about the nature of belief that rules out the possibility of knowingly holding beliefs which cannot be rationally held at the same time? In this paper, I argue that there can be cases of intrapersonal synchronic disagreement, and that such disagreements can be deep, in the same way that interpersonal disagreements can be deep. For intrapersonal disagreements, just like interpersonal disagreements, can be grounded in conflicting frameworks for interpreting and reasoning about the world. I also argue that synchronic intrapersonal disagreements are peer disagreements. The paper ends with a discussion of four possible responses to interpersonal deep disagreements, concluding that if those responses are sometimes rational responses in the interpersonal case, then they are also sometimes rational responses in the intrapersonal case. (shrink)

There are two main ways to teach a course online: synchronously or asynchronously. In an asynchronous course, students can log on at their convenience and do the course work. In a synchronous course, there is a requirement that all students be online at specific times, to allow for a shared course environment. In this article, the author discusses the strengths and weaknesses of synchronous online learning for the teaching of undergraduate philosophy courses. The author discusses specific strategies and (...) technologies he uses in the teaching of online philosophy courses. In particular, the author discusses how he uses videoconferencing to create a classroom-like environment in an online class. (shrink)

The pioneering analysis of synchronicity was given by Jung, yet despite the concept's momentous significance in Jung's work, and despite the widespread dissemination of the term 'synchronicity' even within pop culture, synchronicity is often badly misconstrued and remains "perhaps the least understood of Jung's theories". Synchronicity, Science, and Soul-Making has already been hailed as the most important analysis of synchronicity since Jung himself.

In `Underestimating Self-Control' (1997a), I argued that Jeanette Kennett and Michael Smith (1996) underestimate our capacity for synchronic self-control. They argued for a solution to a puzzle about such self-control that features non-actional exercises' of self-control. I argued in response that `a more robust, actional exercise of self-control is open to agents in scenarios of the sort in question' (1997a: 119). They disagree (Kennett and Smith 1997).In Mele 1997a, I resisted the temptation to criticize Kennett and Smith's attempted resolution, because (...) I thought it better to concentrate on sketching an alternative resolution. Here, I will argue that the resolution they offer is problematic and reply to their criticism (1997) of my suggested resolution. (shrink)

Sociological studies of work and time have argued that academic temporalities are increasingly rationalized and rendered accountable, resulting in a divergence of planned and experienced time in academic work. Shared research facilities that provide platform technologies to large user pools are no exception to this, as its administrations seek to increase the profitability of limited instrument time. Based on an ethnographic study of three facilities at an American university, this article examines how diverging rhythms are enacted in organizational schedules and (...) instrument work and kept aligned on the laboratory floor. Drawing insights from time studies and repair sociology, I argue that although technologies of time accounting provide powerful templates for action, they become effective only through ongoing “synchronization” work. Synchronization calls attention to discrete techniques and work practices, such as the adjustment of users’ bodies, user expectations, or work processes, that technical staff draw upon to resolve slippages between organizational rhythms and the temporal realities of data collection. This analysis suggests that technicians’ local and embodied practices not only affect their own professional roles but also organizational stability and productivity in time-sensitive environments. (shrink)

Adults and infants display a robust ability to perceive the unity of a center-occluded object when the visible ends of the object undergo common motion (e.g. Kellman, P.J., Spelke, E.S., 1983. Perception of partly occluded objects in infancy. Cognitive Psychology 15, 483±524). Ecologically oriented accounts of this ability focus on the primacy of motion in the perception of segregated objects, but Gestalt theory suggests a broader possibility: observers may perceive object unity by detecting patterns of synchronous change, of which (...) common motion is a special case. We investigated this possibility with observations of adults and 4-month-old infants. Participants viewed a center-occluded object whose visible surfaces were either misaligned or aligned, stationary or moving, and unchanging or synchronously changing in color or bright- ness in various temporal patterns (e.g. ¯ashing). Both alignment and common motion con- tributed to adults' perception of object unity, but synchronous color changes did not. For infants, motion was an important determinant of object unity, but other synchronous changes and edge alignment were not. When a stationary object with aligned edges underwent syn- chronous changes in color or brightness, infants showed high levels of attention to the object, but their perception of its unity appeared to be indeterminate. An inherent preference for fast over slow ¯ash rates, and a novelty preference elicited by a change in rate, both indicated that infants detected the synchronous changes, although they failed to use them as information for object unity. These ®ndings favor ecologically oriented accounts of object perception in which surface motion plays a privileged role. Ó 1999 Elsevier Science B.V. All rights reserved. (shrink)

The current debate over Aristotle's commitment to prime matter is centered on diachronic considerations found in his theory of substantial change. I argue that an appeal to this theory is not required in order to establish his commitment to the existence of prime matter. By drawing on Physics II.1's conception of what it is for an element to have a nature - that is, to have an inner source of movement and rest - I introduce a synchronic justification for the (...) existence of prime matter. By trading on the relationship between the thing that has a source of change and the source it has , I show that something that has a source in itself cannot be identical with its source, and that a type of matter that has no nature of its own (a kind of prime matter) is required to block this identification at the level of the elements. (shrink)

Morten Frederiksen explores Carl Gustav Jung's elusive notion of synchronicity from a transrational perspective and relates synchronicity to the transpersonality of the "All-One". This is done by expanding the content and meaning of Wolfgang Dietrich's layers of Elicitive Conflict Mapping (ECM) through re-relating them to Ken Wilber's model of the structures of consciousness; with synchronicity as the literal connecting principle. The result, then, is an expanded notion of the transrational peace philosophy which includes Wilber's model of stages shorn of its (...) evolutionary slant and fathoms synchronicity in its theoretical outlook and practical application. Contents A Transrational Approach to Peace Studies through processing the Topic of Synchronicity Jungian Psychology and his Concept of Synchronicity Transrational Peace Philosophy and Consciousness Development Seven different Structures of Consciousness Consequences of Synchronicity for a transrational-oriented Peace Philosophy and Practice Target Groups Lecturers and Students of Psychology, Peace Students and Conflict Transformation Researchers Practitioners in the Field of Elicitive Conflict Transformation About the Author Morten Frederiksen is a Peace Researcher from the MA Program in Peace, Security, Development and International Conflict Transformation at the University of Innsbruck, Austria, and Coordinator of the Danish Development Aid Agency "U-landsforeningen Svalerne". (shrink)

Synchronicity IIn the summer of 2006, I read several books by well-known existential psychiatrist and insightful novelist Irvin Yalom.2 They were all thought-provoking and mightily entertaining. Dr. Yalom sustains lively interests in philosophical aspects of psychiatry, as well as in psychiatric aspects of philosophy. Among other works, he has written two profoundly philosophical novels, namely The SchopenhauerCure and When Nietzsche Wept, in which he has delved deeply and creatively into the psyches of these two outstanding thinkers via the refracting media (...) of literary and historical fiction, and through lenses of eclectic existential psychiatry.Yalom’s fictive excursions are not confined to philosophical realms—far from it. In a delightfully ironic novel entitled Lying on the Couch Yalom takes to task some perennially unfinished business of psychoanalysis, namely analysts’ perpetual struggles with counter-transference issues. Even the most seasoned psychoanalysts, so Yalomartfully reveals, have not yet had their own egos sufficiently shrunk. In consequence, they are apt to experience all kinds of problems with patients, and not always of the patients’ making. To be sure, patients are wont to deceive their analysts at times, whether subconsciously, diffidently, or maliciously. And analysts themselves are prone to all the vanities catalogued by Ecclesiastes in antiquity,3 egoisms and egotisms alike that appear innately rooted in the human psyche, and which inevitably contribute to self-deception. If an analyst’s vanities, self-deceptions, and unresolved counter-transferences were skillfully exploited by a professional con-artist posing as a patient, personal and professional mayhemwould result. This is one of the conspicuous threads in the rich tapestry of untruths, vanities and self deceptions that Yalom weaves in Lying on The Couch.One particular episode in Yalom’s novel rather jarred me when I encountered it in August 2006, because it coincided with an uncannily similar episode that was unfolding in my own life at precisely the same time. (shrink)

I maintain, in defending “thirdism,” that Sleeping Beauty should do Bayesian updating after assigning the “preliminary probability” 1/4 to the statement S: “Today is Tuesday and the coin flip is heads.” (This preliminary probability obtains relative to a specific proper subset I of her available information.) Pust objects that her preliminary probability for S is really zero, because she could not be in an epistemic situation in which S is true. I reply that the impossibility of being in such an (...) epistemic situation is irrelevant, because relative to I, statement S nonetheless has degree of evidential support 1/4. (shrink)

Experiments with remote perception and Random Event Generators (REG) performed over the last decades show small but significant anomalous effects. Since these effects seem to be independent of spatial and temporal distance, they appear to be in disagreement with the standard scientific worldview. A very simple explanation of quantum mechanics is pre- sented, rejecting all unjustified claims about the world. A view of mind in agreement with cognitive neuroscience is introduced. It is argued that mind and consciousness are emer- gent (...) properties of the brain and are understandable without any nonphysical assumptions. A plausible explanation of the results of anomalous experiments, based on the concept of synchronicity, introduced by C.G. Jung and advocated by W. Pauli, is offered. A proof is given that strong correlations should exist between any systems that once interacted. Synchronicity events between parts of the brain and physical objects may be sufficient to explain the results of anomalous experiments. Standard physics is sufficient to understand these phenomena. Motto. (shrink)

Jung was intrigued from early in his career with coincidences, especially those surprising juxtapositions that scientific rationality could not adequately explain. He discussed these ideas with Albert Einstein before World War I, but first used the term "synchronicity" in a 1930 lecture, in reference to the unusual psychological insights generated from consulting the I Ching. A long correspondence and friendship with the Nobel Prize-winning physicist Wolfgang Pauli stimulated a final, mature statement of Jung's thinking on synchronicity, originally published in 1952 (...) and reproduced here. Together with a wealth of historical and contemporary material, this essay describes an astrological experiment Jung conducted to test his theory. Synchronicity reveals the full extent of Jung's research into a wide range of psychic phenomena. This paperback edition of Jung's classic work includes a new foreword by Sonu Shamdasani, Philemon Professor of Jung History at University College London. (shrink)

While discussion is a hallmark of philosophy teaching methods, some instructors express doubt as to the possibilities for its meaningful implementation in online classes. Here, I report on a routine that utilized synchronous and asynchronous discussion strategies to promote community-building and critical engagement in an educational philosophy class forced online due to the COVID-19 pandemic. Before class, students used social annotation software to collaboratively read a text. During class, we pursued whole-group discussion using student-centered strategies before breaking into partners (...) for small-group work on a written discussion prompt. After class, students individually replied to the prompts written by these small groups. Results show that students found that this routinized structure promoted engagement with the course content and each other, ultimately building a community that supported critical thinking in the virtual classroom. Implications are raised regarding instructor workload and control over course outcomes. (shrink)

While discussion is a hallmark of philosophy teaching methods, some instructors express doubt as to the possibilities for its meaningful implementation in online classes. Here, I report on a routine that utilized synchronous and asynchronous discussion strategies to promote community-building and critical engagement in an educational philosophy class forced online due to the COVID-19 pandemic. Before class, students used social annotation software to collaboratively read a text. During class, we pursued whole-group discussion using student-centered strategies before breaking into partners (...) for small-group work on a written discussion prompt. After class, students individually replied to the prompts written by these small groups. Results show that students found that this routinized structure promoted engagement with the course content and each other, ultimately building a community that supported critical thinking in the virtual classroom. Implications are raised regarding instructor workload and control over course outcomes. (shrink)

We briefly review the long-standing ideas about the use of synchronicity in the brain, which rely on Donald Hebb's views on cell assemblies and synaptic plasticity. More recently the distinction among several timescales in the description of neural activity has become a focus of theoretical discussion. Phillips & Singer's target article is criticized mainly because it does not distinguish these timescales properly and hence does not really address the questions so intensely debated today.

Dynamical analysis, chaos suppression and electronic implementation of the synchronous reluctance motor without external inputs are investigated in this paper. The different dynamical behaviors found in the SynRM without external inputs are illustrated in the two parameters largest Lyapunov exponent diagrams, one parameter bifurcation diagram, and phase portraits. The three single controllers are designed to suppress the chaotic behaviors found in SynRM without external inputs. The three proposed single controllers are simple and easy to implement. Numerical simulation results show (...) that the three proposed single controllers are effective. Finally, the dynamical behaviors found in the SynRM without external inputs and the physical feasibility of the three proposed single controllers are validated through circuit implementation on OrCAD-PSpice software. (shrink)

The translocation of tRNAs through the ribosome proceeds through numerous small steps in which tRNAs gradually shift their positions on the small and large ribosomal subunits. The most urgent questions are: (i) whether these intermediates are important; (ii) how the ribosomal translocase, the GTPase elongation factor G (EF‐G), promotes directed movement; and (iii) how the energy of GTP hydrolysis is coupled to movement. In the light of recent advances in biophysical and structural studies, we argue that intermediate states of translocation (...) are snapshots of dynamic fluctuations that guide the movement. In contrast to current models of stepwise translocation, kinetic evidence shows that the tRNAs move synchronously on the two ribosomal subunits in a rapid reaction orchestrated by EF‐G and GTP hydrolysis. EF‐G combines the energy regimes of a GTPase and a motor protein and facilitates tRNA movement by a combination of directed Brownian ratchet and power stroke mechanisms. (shrink)