 Any version of representative realism denies direct world-involvement. The sense-datum theory is further incompatible with perceptual directness, as it has us perceive objects by way of perceiving our sense-data; and it is typically fleshed out in such a way as to be incompatible with referential directness as well, holding that we can think about mind-independent objects only as the external causes of these sense-data. It is compatible, however, with phenomenal and epistemological directness. For example, one could deny that the “inference” from sense-data to external objects is conscious and deliberate and insist that only such deliberate inferences would render a belief epistemically inferential (i.e., nonbasic) in the sense of  2.1.5  above.