 Cowie (2009) offers a helpful distinction between three types of eliminativist argument. The first, argues that some type of object or property fails to exist. She claims that this type of argument cannot be applied to the concept of innateness because the concept is too unclear to even specify what it refers to. A second style of argument claims that a concept should be eliminated because “it doesn’t work.” That is, because it is associated with a failing or degenerate research program. Cowie argues that the concept of innateness has in fact been highly productive. This is a question we return to momentarily. The third style of argument claims that the target concept is so muddled that it should be eliminated for this reason alone. Cowie (2009) suggests that vagueness and ambiguity can potentially lead to fruitful research programs. Philosophers should be cautious about demanding conceptual clarity from scientists when unclear concepts are leading to productive outcomes.