 One way to defend continuous creation theory from the persistence objection is to argue that it is possible to create the same object more than once. Quinn distinguishes between creating something (bringing about its existence) and introducing something (bringing about its existence for the first time). It is clearly impossible to introduce something at more than one time, but, Quinn argues, it is not at all clear that it is impossible to create something at more than one time. Quinn thus calls the causal requirement into question (Quinn  1983).[2]