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A letter to the editor is presented which discusses the applicablity of the term harmony in describing arbuscular mycorrhizal (AM) symbioses.

In this essay, I explore how cognitive science could illuminate the concept of beauty. Two results from the extensive literature on aesthetics guide my discussion. As the term 'beauty' is overextended in general usage, I choose as my starting point the notion of 'perfect form.' Aesthetic theorists are in reasonable agreement about the criteria for perfect form. What do these criteria imply for mental representations that are experienced as beautiful? Complexity theory can be used to specify constraints on mental representations abstractly formulated as vectors in a high-dimensional space. A central feature of the proposed model is that perfect form depends both on features of the objects or events perceived and on the nature of the encoding strategies or model of the observer. A simple example illustrates the proposed calculations. A number of interesting implications that arise as a consequence of reformulating beauty in this way are noted. [ABSTRACT FROM AUTHOR]

Observing that the violent realities of family life belief the social rhetoric of harmony, most sociologists recommend 'demythologizing' the family. This paper challenges that view, arguing that social rhetoric must be analysed rather than debunked. The sense-making activities of actors who engage in violent family events are identified as a strategic site for such an analysis. The paper explores the ways in which the rhetoric of family harmony is routinely sustained and reproduced. Two kinds of supports are considered (i) macrosocial supports, which sustain family rhetoric by integrating it into a wider system of collective representations; and (ii) microsocial supports which sustain family rhetoric by embodying it in the accounts of family members. [ABSTRACT FROM AUTHOR]