This book challenges contemporary Direct Realist theories of perception and defends a 

version of the causal theory that the author locates in the Critical Realist tradition of 

which Wilfrid Sellars is the main recent exponent

This book challenges contemporary Direct Realist theories of perception and defends a version of the causal theory that the author locates in the Critical Realist tradition of which Wilfrid Sellars is the main recent exponent