Erfahrung und Vorurteil im naturwissenschaftlichen Denken Johannes Keplers

The change from ancient and medieval to modern natural science, called Wende (instead of ‘revolution’), must be associated with the work of Johannes Kepler and not that of Nicolaus Copernicus. Copernicus merely showed the way, introducing heliocentricity as the order of the planets. This Wende resulted from the synthesis of several disciplines formerly isolated from each other, namely mathematical (i.e. hypothetical) astronomy, new physics, mathematical harmony, astrology, new physical optics, and natural theology. Whereas Copernicus united mathematical astronomy and peripatetic (Aristotelian) physics, Kepler was first to see the necessity for providing a physical explanation and an ontological foundation to the heliocentric system. He was the first to consider and measure the movement of the planets in depth. The elements for his new physics Kepler obtained not from newly observed data, but from a harmonic archetypus of the regular polyhedra fitted in between excentric planetary spheres. On the basis of this archetypus (which he considered to be God's model in creating the universe) he accepted the new heliocentric planetary system as a physical reality. That is why astronomy, by way of taking into account stereometric quantities, is, in Kepler's eyes, a kind of divine worship. Later, the best empirical data had also to be taken into consideration as a means of proving this a priori archetypus (Vorurteil, preconception). The result was, on the one hand, a universal natural science able to explain natural processes in grater abundance than ever before or since in the history of science. Although accepted only in parts, it resulted in founding a new natural science with adherent mathematical and empirical methods. It also led Kepler to establish, step by step, the elliptical path of the planets, thereby overcoming, for the first time, the two axioms of ancient astronomy, requiring uniform and circular planetary motion. It has been shown that this Keplerian Wende was possible only within the Historischen Erfahrungsraum (‘historical field of experience’) of Renaissance Humanism (cf. this Journal 9/1986, p. 201), which came about itself as the result of reactivating the scientific and philosophical thinking of the ancient Greeks and was accomplished by three steps (phases) relating to the revival of (1) original ancient writings, (2) the ancient knowledge of natural facts and data, and (3) the ancient scientific and philosophical ideas and mentalities (Drei-Phasen-Modell).     

The Social and Historical Context of Short-Term Stylistic Replacement: A Zuni Case Study

Large collections of ethnographic ceramics created over multiyear periods of intensive collecting provide a way to bridge discrepancies between the temporal scales of ethnographic studies based on single field visits and archaeological analyses of assemblages accumulated over much longer periods of time. The Smithsonian's Stevenson collections of Zuni ceramics, consisting of 3500 vessels, were assembled in three intensive field seasons over a 6-year period. They are particularly useful for addressing questions about rates of stylistic change and the relative use-lives of vessel forms and sizes with known ethnographic functions.     

MODERNITY: A PROBLEMATIC CATEGORY IN THE HISTORY OF EMOTIONS

Emotions in History: Lost and Found by Ute Frevert is a lively introduction to some of the issues that historians must address when writing about emotions. Emotions in History notes some of the uses emotions have had in both public and private life, and it charts the changing fate of several emotions—particularly acedia, honor, and compassion—that have been either “lost” or “found” over time. Nevertheless, it suffers from a notion of modernity that obscures rather than clarifies. Making “modernity” the cause of changes in emotional ideas, comportment, and feeling, it cuts today's society off from its earlier roots and fails to see the continuities not only in emotions themselves but also in the mechanisms by which emotions have changed over time. Frevert's assumption that only the modern world has been interested in emotions is belied by eloquent learned writings on the topic in the medieval period (though not using the term “emotions”). Further, modernity is not alone in having effective mechanisms by which ideal standards of emotions and their expression are transmitted to a larger public.     

A tale of two sites: Functional site differentiation and lithic technology during the Late Pithouse period in the Mimbres area of Southwestern New Mexico

The raw materials from which stone tools are made can provide considerable information relevant to behavioral variation within a prehistoric population. By examining the stone used for tools from two different types of Late Pithouse period (A.D. 550-1000) residential sites from the Mimbres Mogollon area of Southwestern New Mexico, this paper illustrates how understanding the lithic landscape of a region provides a means to assess behavioral variation in stone procurement practices. The analysis indicates that the differences in mobility and economic pursuits between longer-term residential sites containing pit structures and a shorter-term seasonal residential site with ephemeral architecture structured the raw material procurement practices of site’s occupants. Pit structure sites were focused on agricultural pursuits and used a technology that centered on the production of informal tools fashioned from locally available raw materials. The seasonal residential site focused on wild resources and evidenced greater reliance on formal tool production using raw materials acquired from beyond the immediate vicinity of the site. Despite increasing sedentism and agricultural dependence of the region’s population, some portion of the population exercised seasonal mobility strategies and associated technological and behavioral practices more typical of hunting and gathering populations, suggesting a diverse socio-economic system within the region.