 In response, the sense-datum theorist might deny E-M Link 1. In particular, the theorist might say that experiences justify beliefs about the external world when complemented with reflection on how they are best explained (Russell 1912). Call this the IBE approach since it concerns Inferences to the Best Explanation of our experiences (see Vogel 1990 for more contemporary discussion). Setting aside debate about how such an explanation might go, and why it might be the best, the response might not go far enough.