Although the methodological approaches that the volume brings together are widely various, its contributors have evidently learned a good deal from one another, and the result displays much more coherence than one might have expected from a book in which philosophy of various sorts shares space with primatology and with discussions of autism. This impressive coherence is heartening to the reader who has entertained fears about philosophy's ability to stay relevant when faced with psychology's unabating torrent of freshly gathered data. The volume provides every reason to suppose that joint attention is a topic on which philosophy and other disciplines can collaborate fruitfully.