Although it's not on topic, it has been brought up so I'll mention a way to keep thinking of a table with the openness of a child: you are more or less forced to believe there is something there, as experience has demonstrated that over and over and at some point you'd be pigheaded to deny it. But is it a table? What the heck is a table anyway? There's no such thing as a table, it's a unifying categorization you've invented to lump a set of similar observables together to get your head around a very complex reality. Reality hasn't the vaguest idea what a table is, and it has nothing to do with why it hurts to walk into one, but the grownups seem happy when you call it that.