Why? A spoon is an icon of an interface, not a truth that persists when no one observes. My spoon is my icon, describing potential payoffs and how to get them. I open my eyes and construct a spoon; that icon now exists, and I can use it to wrangle payoffs. I close my eyes. My spoon, for the moment, ceases to exist because I cease to construct it. Something continues to exist when I look away, but whatever it is, it’s not a spoon, and not any object in spacetime. For spoons, quarks, and stars, ITP agrees with the eighteenth-century philosopher George Berkeley that esse is percipi—to be is to be
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