【正文】
to be secondary matters. The need to improve is associated with the anguish of not being able to predict the future。 indeed, technical reports are written in the future tense rather than the past. Their horizon looks towards what is to e (in contrast to scientific reports which look towards the past or the present). Among the principal limitations of the technical perspective is the wide variety of definitions concerning tourism, which, by their nature, are not mutually exclusive but rather abstract and general, referring to such activities as business, leisure and rest, among others. These generalising definitions are appropriate to the modern system of conducting business in which cohesion and synergy are seen to be the principal strengths. But these definitions, although maybe efficient for some purposes, are too superficial to analyse the phenomenon of tourism from a scientific point of view. Secondly , the technical perspective is more concerned with the profitability of the suppliers of tourism services and the attractions of the destination than understanding the real dynamics of the process of tourism development. Many studies from this perspective openly declare that tourism should be understood as a western and modern phenomenon, thus trivialising more than 2,500 years of history, and the value that other cultures and civilisations have put on their forms of tourism activity. As a form of leisure, tourism evokes the value which civilisations have always placed on social order. Unfortunately, the systemic perspective, which could have helped the understanding of the functioning of tourism, has been coopted by disciplines such as marketing and management, where efficiency and success are seen to be more important than understanding. The literature in tourism in the last few decades has placed great emphasis on themes related to the impact of tourists on local munities. According to this perspective, this impact may be divided into three elements development, interaction between the guest and the host, and culture. From the point of view of local residents, one of the most negative aspects of tourism is the concentration of people and capital, and the consequent rise in criminal behaviour (Brunt and Courtney, 1999). This perception is an important aspect of research into tou