Indeed, there is no need to posit any physical object, or a spacetime, that exists when no one observes. Space and time themselves are simply the format of our interface, and physical objects are icons that we create on the fly as we attend to different options for collecting fitness payoffs. Objects are not preexisting entities that force themselves upon our senses. They are solutions to the problem of reaping more payoffs than the competition, from the multitude of payoffs on offer.
