 This, broadly speaking, reductionist argument is open to question in a variety of respects. Some philosophers have maintained that it cannot be effective because we literally perceive proportions and other internal relations (Mulligan 1991; Hochberg 2013: 232). These relations must exist, otherwise we couldn’t perceive them. So, they conclude, something must have gone wrong with this argument because it leads to the mistaken conclusion that there aren’t any internal relations out there to be perceived.