ABSTRACT
In this paper I stake out the claim of joint attention to be what grounds (a) the common knowledge of perceived objects that underpins joint action with respect to them, (b) the possibility of referential communication about perceived objects, and (c) our knowledge of one another’s conscious experiences. I don’t aim for more than a preliminary mapping of what I take to be the main issues. I begin by stating these three topics a bit more fully, then look at each in a bit more detail.
