Final answer:
The passage does not directly address whether the reference to 'patches of blue' by A and B is a 'we-private language' relative to C. Linguistic relativity and different perceptions influenced by language suggest it is dependent on multiple factors.
Step-by-step explanation:
The passage provided does not give a definitive answer about whether A and B's reference to 'patches of blue' constitutes a 'we-private language' relative to C. However, what can be inferred from the passages is that language and conceptualization can be heavily influenced by the specific linguistic system one uses. The passages discuss concepts like linguistic relativity and the notion that different languages can influence how we perceive and categorize the world around us.
For instance, Kay and Kempton's study on color perception shows that linguistic differences can affect our categorical perception of color. Similarly, Levinson's research on spatial language demonstrates how languages that use cardinal directions rather than body-relative terms create less confusion and offer an absolute reference system. All this suggests that the question of a 'we-private language' might not be simply a yes or no answer, but rather one that is contingent on various factors such as the linguistic system in use and the sensory abilities and experiences of the individuals involved.