 Revisionary views about which objects there are are those that depart in one way or another from conservatism. These include both eliminative views, on which there are fewer ordinary objects than are recognized by conservatives, and permissive views, on which there are extraordinary objects that conservatives do not recognize. There is, however, some controversy about whether these departures from conservatism actually deserve to be called ‘revisionary’. As we shall see in  §3.1,  many eliminativists and permissivists take their views to be entirely compatible with common sense and ordinary belief.