An Input of Fuzzy Logic to Sustainable Tourism: A Case from Brazil

Tourism has experienced continuous expansion and diversification to become one of the fastest-growing economic sectors in the world. However, researches affirm the complexity of this sector and the fact that sustainable development depends on various topics that are not correctly identified by policymakers. In this context, this manuscript aims to reflect on the effects of tourism and propose alternatives that can be sustainable. Results showed gaps in knowledge about the subject and, through a case study analysis in Brazil, identified the forgotten effects of tourism activity that can impact sustainable development. Also, it presented the Forgotten Effects Theory to manage uncertainty and assist in decision-making.