 Thirdly, there may simply be nothing to be similar to because some representations are not about an actual object. Some paintings represent elves or dragons, and some models represent phlogiston or the ether. None of these exist. This is a problem for the similarity view because models without targets cannot represent what they seem to represent because in order for two things to be similar to each other both have to exist. If there is no ether, then an ether model cannot be similar to the ether.