 There is an obvious criticism of al-Fārābī’s definition of logic, namely that the features that he lists are too vague. For example, how could we use his list to determine whether the art of poetry is or is not a part of logic? The real problem is that for al-Fārābī himself with his Neoplatonic heritage, logic consists of whatever Aristotle said in the Organon, and al-Fārābī never comes near finding any abstract way of characterizing this body of  material.[12] 