 We can ask questions about the relationships among modalities in different areas of explanatory concern. Worthwhile areas for attention include the objects, contents, and phenomenology of perception, as well as perceptual processes and their architecture. Crossmodal and multimodal considerations might shed doubt on whether vision-based theorizing alone can deliver a complete understanding of perception and its contents. This approach constitutes an important methodological advance in the philosophical study of perception (for further discussion, see O’Callaghan 2012, 2019, Matthen 2015, Stokes et al. 2015).