/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: paulosergiovieira12 https://cdn.slidesharecdn.com/profile-photo-paulosergiovieira12-48x48.jpg?cb=1523626251 O otimista diz que vivemos no melhor dos mundos, e o pessimista teme que isso seja verdade.