The Theory of External Delivery:
Is External Delivery the same as Santa Clausism?
No. The theory of external delivery is only concerned with empirically testing whether Christmas presents are delivered by an external agent, or an internal agent such as your parents. Santa Clausism typically starts with the premise that Santa Claus is delivering presents, and then seeks to fit the evidence to that theory. The theory of external delivery has developed strictly from objective interpretations of the empirical evidence.