The subject-object is inferential, forget it. Take this thing, this glass of water in front of you. The sight of it the feel of it, picking it up and drinking from it, the knowledge of what to do with the glass, expectation filled in every way. No surprise to find it on the table, it was ready at hand, transparent to intention once recognised. It was placed by an attendant to announce a certain event, one in a known series of similar events. But then what sort of glass is it? Again, silently, you place the glass in its contexts, and gauge its congruence with the rest of the environment, with the class and type of cafe, this place and time in which you are at home. You move in a world of the known, perspectives effortlessly give way, one to the next. Things, like this glass, emerge out of the background and then recede back into it. How many concordances are needed to maintain the sense of seamlessness? More or less than you would expect?