Neural processes remain hidden from an individual's consciousness.
Our experiences reveal little about the processes under pinning behaviour. When one tries to provide a causal explanation of HOW experiences are achieved, introspective based deductions seem to fail. In fact, individuals are unable to provide an adequate explanation for HOW they do, or know, anything. Ultimately, all experiences have to be the product of unconscious neural processes. Specialized neural circuits were 'selected' because they solved adaptive problems in the EEA, thereby promoting the survival of our ancestors.