Imagine this: You’re carrying around a disastrously heavy duffel bag, you wear it on your shoulder, and it weighs enough that it makes you walk funny while you’re holding it. But then you put it down. The bag is still there. Even if you were to leave the room, even if you were to leave the house, the bag is still there. And of course, you could think of the duffel bag at any given moment, think of how you felt when you held it, how heavy it was, why it was heavy, what was inside it—but it’s so much easier to not think about the bag when you don’t have to hold it. And as time goes on, the
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