/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: RlndSlsV https://cdn.slidesharecdn.com/profile-photo-RlndSlsV-48x48.jpg?cb=1523086136 poco importa la cantidad de cisnes que hayamos observado, ello no justifica la conclusion de que todos los cisnes sean blancos