Lutsina: Because futuristic science fiction does not need to represent current social realities, its writers can envisage radically new social arrangements. Thus it has the potential to be a richer source of social criticism than is conventional fiction. Priscilla: That futuristic science fiction writers more skillfully envisage radically new technologies than new social arrangements shows how writers' imaginations are constrained by current realities. Because of this limitation, the most effective social criticism results from faithfully presenting the current social realities for critical examination, as happens in conventional fiction. Lutsina and Priscilla disagree with each other about whether ['envisaging radically new technologies rather than radically new social arrangements is a shortcoming of futuristic science fiction', 'writers of conventional fiction are more skillful than are writers of futuristic science fiction', 'some science fiction writers have succeeded in envisaging convincing, radically new social arrangements', 'futuristic science fiction has more promise as a source of social criticism than does conventional fiction']