Today's industrial society is having an encounter with ecology: in April, 1976 the French government presented the National Assembly with documents on the dumping and burning of waste in the sea, as well as on the protection of nature. Electoral campaigns, discussions and demonstrations are centered about the theme of pollution and environment. In the last century the accumulation of waste had already become a problem : “ One of the most important duties of industry is to find a useful employment for waste,” wrote P. L. Simmons in 1875. The advice was heeded if we may believe what J. Gottmann wrote on the matter nearly a century later: “ If our era is to be defined by its most important raw material and one that is truly proper to it, as is done for the Bronze Age or the Iron Age, we may no longer speak of a Steel or Petroleum Age, nor of an Atomic Age (which may come in the future) but of the Garbage Age.” The extraordinary demographic expansion of humanity that has gone from a population of five million in the Paleolithic Age to four billion today gives rise to a monstrous abundance of refuse resulting as much from the natural mechanisms of living as from industrial activity (factory waste) or from the present attitude haunted by the idea of obsolescence (the throw-away society of Alvin Toffler). The outline of a universe submerged in waste matter appears, similar to that evoked by Italo Calvino in Città Invisibili apropos of the town of Leonia: “The refuse of Leonia would gradually invade the world if the interminable garbage heaps were not pressed upon, beyond the last crest, by the refuse of other towns that also push mountains of refuse far away from themselves. Perhaps the entire world beyond the borders of Leonia is covered with craters of trash, each with a continually erupting metropolis in its center. The borders between foreign or enemy towns are thus contaminated bastions in which the detritus of the one and the other serves as mutual support, menacing and mixing together.” The world of Metamorphosis is approaching in which man, transformed into an insect, covered with dust and remains of food, gnaws on the cores and parings of half-rotten vegetables. Science fiction invents a remedy to fit the problem : a planet specialized in storing all the garbage unloaded by an entire galaxy.

The problem, of man falls into a category of problems of human knowledge that are both ‘eternal’ and ever new. Countless legends, myths, philosophical systems, religious doctrines, scientific conceptions and fantastic visions have been the fruit of man's ungovernable desire to know himself, to know his essence, his purpose in the world, his fate, his future. Not to mention the ingenious hypotheses and Utopian fantasms, scientific truths and galling mistakes, bold projects and cowardly superstitions handed on by human civilization in its Indefatigable search for the ‘magic crystal’ which would at last reveal man's true nature. All periods have made their contribution In this everlasting quest and all have relied on the few parcels of truth gleaned by humanity at earlier stages of development. Our times, the most dramatic and revolutionary of all, are by no means an exception and can be distinguished from the rest only by the exceptional acuity and urgency of the problem.

To speak of lateral specialization is to take up the old question found in myths and religions from the.dawn of humanity. Gastaut has remarked that the prehistoric skulls he collected and examined presented a larger number of trepannings on the left than on the right. At the very begining, man's. cranium was treated asymmetrically by the trepanners.

Carnival was brought to the New World by Spanish and Portuguese colonizers, and it has been preserved there up to our day, although in the meantime it has almost disappeared from the countries where it originated. One asks oneself if Carnival has kept its original characteristics over the years, or if it instead has been transformed, and if so, how. The ethnological and cultural variety present in Latin America leads us to think that there must have been an evolution over the years, and that Carnival should show some signs of acculturation. It is the examination of these two points that will be the subject of our study.

In our times, when the pace of economic, scientific and technological, social and cultural change calls to mind the relativist velocities of contemporary physics, Einstein's criterion begins to be applicable to the historical process itself; movement can be recorded (and consequently the notion of velocity acquire meaning) provided an adequate reference system is available. Where science is concerned, such systems have always existed: historians have brought out the increase in adequate knowledge in the past by comparing it with present knowledge, which then offered a system of absolute reference. But now, the theory of relativity, quantum mechanics, molecular biology and the radical transformation of standards of value in all cultural areas have made like absolutization of contemporary ideas impossible. Today ideas furnish no more than a point of departure for non-classical retrospection which, as Jaurès said, seeks the fire, not. the ashes, in the history of science. But: the fire of science, its dynamics, its movement, is inseparable from its value, its effect, its psychological ‘accompaniment.’ Contemporary science, with unprecedented dynamism, is distinguishable from classical science by its far more emotional coloring. It lays bare not only the logical collisions of knowledge but also the emotional collisions. Einstein called the history of science the ‘drama of ideas.’ A drama which sometimes turns into a tragedy. The tragic sense Lorentz was aware of in the crumbling of old conceptions is easily perceptible in the remark he made when he confessed he would have prefered to be dead before the structure of classical physics collapsed. For Erenfest the tormenting experience of a personal inability to understand the positive bases of non-classical physics was also tragic and, according to Einstein, was what drove him to suicide. Einstein's own dissatisfaction tor thirty years while he strove in the field theory alone to find a stable universal conception possessing more complete ‘internal perfection’ than the then existing solution, was again tragic. The real characteristic of the collisions of non-classical science, however, is their ambivalence: the tragic notes blend with the optimistic perception of irreversible general progress in knowledge. The collisions of knowledge and this optimistic perception together sound a very complex chord, major on the whole, but with minor harmonics.

According to a widely accepted opinion, the most typical characteristic and even the constitutive element of science is measurement, i.e., those processes of measuring upon which science is based. For a long time this has caused a general orientation of disciplines seeking to call themselves “science” toward a certain form of quantification; in order to achieve the prestigious title of “science “ some form of measurement, of whatever kind, had to be introduced into the area of study.

The notorious but: unimpeachably corroborated case of Pavlov's mice raises, in capsule form, a variety of fascinating issues with far-reaching ramifications in several directions, but with particularly serious implications, several of which are well worth restating and pondering further (cf. Sebeóle 1977b: 192-201), both for the foundations and research methodology of contemporary semiotics.