The problem is that it’s not clear that such an austere vocabulary can even in principle capture the complete nature of concrete reality. A mathematical description of a situation abstracts from concrete reality; a mathematical model in economics, for example abstracts away from what is being bought or sold, or the nature of labour. And nomic predicates can only express information about how physical entities are disposed to behave. This is fine if we want to predict, say, how electrons will behave. But intuitively there must also be an intrinsic nature to an electron; there must be an answer to the question “How is the electron in and of itself?” And this question doesn’t seem to be answered by describing how electrons are disposed to behave.