 Other interpretations have also been suggested about how Aristotle’s categories were derived. Some hold that Aristotle’s list was arrived at by reflecting on grammatical categories, and assuming a parallelism between structures of language and structures of the world (Baumer 1993). But others have developed interpretations that do not consider Aristotle to have arrived at his categories by considering linguistic matters such as grammatical structure or the questions we may ask. Instead, they take them to arise from more worldly considerations such as which types of entity any sensible particular must be related to (Moravcsik 1967). For an overview of the interpretive options, see Studtmann (2007).