Belle van Zuylen dicteerde haar brief aan haar neef toen deze bij haar in Frankrijk verbleef. Zij was al sinds zijn geboorte betrokken geweest bij zijn opvoeding, als raadgeefster van haar broer, de vader van Willem-René. Na de Franse Revolutie kon de jongeman geen aanspraak meer maken op de voorrechten van zijn adellijke geboorte, maar zou zichzelf met werken een plaats in de maatschappij moeten veroveren.

Early childhood is characterized by many cognitive developmentalists as a period of considerable change with respect to representational format. Dienes & Perner present a potentially viable theory for the stages involved in the increasingly explicit representation of knowledge. However, in our view they fail to map their multi-level system of explicitness onto cognitive developmental changes that occur in the first years of life. Specifically, we question the theory's heuristic value when applied to the development of early mind reading and categorization. (...) We conclude that the authors fail to present evidence that dispels the view that knowledge change in these areas is dichotomous. (shrink)

Charles Avison's Essay on Musical Expression, first published in 1752, is a major contribution to the debate on musical aesthetics which developed in the course of the 18th century. Considered by Charles Burney as the first essay devoted to 'musical criticism' proper, it established the primary importance of 'expression' and reconsidered the relative importance of harmony and melody. Immediately after its publication it was followed by William Hayes's Remarks (1753), to which Avison himself retorted in his Reply. Taken together these (...) three texts offer a fascinating insight into the debate that raged in the 18th century between the promoters of the so-called 'ancient music' (such as Hayes) and the more 'modern' musicians. Beyond matters of taste, what was at stake in Avison's theoretical contribution was the assertion that the individual's response to music ultimately mattered more than the dry rules established by professional musicians. Avison also wrote several prefaces to the published editions of his own musical compositions. This volume reprints these prefaces and advertisements together with his Essay to provide an interesting view of eighteenth-century conceptions of composition and performance, and a complete survey of Avison's theory of music. (shrink)

Introduction Major scientific revolutions are rarely, if ever, started deliberately. They can be "in the air" for a long time before the first recognizable ...

The basic operational devices in a particle theory are detectors which show that a particle is “here, now” rather than “there, then.” Successful operation of these devices requires a limiting velocity. Given auxiliary devices which can change particle velocities in both magnitude and direction, the Lorentz-invariant mass can be defined. The wave-particle duality operationally required to explain the scattering of particles from a diffraction grating then predicts fluctuations in particle number (the Wick-Yukawa mechanism), if we postulate a smallest mass. We (...) show that this suffices to establish the conventional quantum mechanical scattering formalism without postulating either “interactions” or “analyticity.” By introducing the phase change due to external electromagnetic fields, we can describe the auxiliary devices assumed above to an accuracy ofe 2/hc, thus completing the operational definition to that accuracy. (shrink)

This article deals with the links between the enaction paradigm and artificial intelligence. Enaction is considered a metaphor for artificial intelligence, as a number of the notions which it deals with are deemed incompatible with the phenomenal field of the virtual. After explaining this stance, we shall review previous works regarding this issue in terms of artificial life and robotics. We shall focus on the lack of recognition of co-evolution at the heart of these approaches. We propose to explicitly integrate (...) the evolution of the environment into our approach in order to refine the ontogenesis of the artificial system, and to compare it with the enaction paradigm. The growing complexity of the ontogenetic mechanisms to be activated can therefore be compensated by an interactive guidance system emanating from the environment. This proposition does not however, resolve that of the relevance of the meaning created by the machine (sense-making). Such reflections lead us to integrate human interaction into this environment in order to construct relevant meaning in terms of participative artificial intelligence. This raises a number of questions with regards to setting up an enactive interaction. The article concludes by exploring a number of issues, thereby enabling us to associate current approaches with the principles of morphogenesis, guidance, the phenomenology of interactions and the use of minimal enactive interfaces in setting up experiments which will deal with the problem of artificial intelligence in a variety of enaction-based ways. (shrink)

This book-review was written by Professor Pierre Dubois just before his untimely death. The Editors are grateful to his wife, Dr Elfrieda Dubois, for preparing the text for publication in History of European Ideas.

A covariant quantum mechanics for systems of finite-mass particles at finite energy follows from interpreting as Wick-Yukawa fluctuations in particle number the quantum fluctuations which are needed by Phipps to understand measurement theory and by Gyftopoulos to understand the second law of thermodynamics. The dynamical one-variable equations require as input the (N − 1)-particle transition matrices and an N-N vertex or coupling constants at three-particle vertices.