 Even still, it is unclear why sense-datum theories should rule out getting non-inferential justification from experiences. Perhaps if a sense-datum theory is true, we at best see external objects indirectly, by means of seeing sense-data. But this is only a point about seeing. Our justification for beliefs could still be non-inferential (Moore 1953; Silins 2011). The crucial question for non-inferential justification is about the role of background beliefs, and the mental process of indirect perception need not make use of background beliefs. For instance, whether you indirectly perceive objects by means of sense-data might instead just be a matter of how the sense-data are caused, leaving open the possibility that you gain non-inferential justification for beliefs about the external world from sense-data.