Picture yourself standing in a room with arms outstretched, pushing the opposite walls apart. Do you have any idea how much energy you would consume if you were trying to keep those walls from crushing you? Instead of doing that, what if you released those two walls, took a couple of steps forward (after all, that gap is kind of like a door, isn’t it?), and walked out of that room and into a completely new one. What about that other room you left behind? Well, the walls have come together in such a way that you can’t ever get back inside it. That gap has closed, and the separate parts of you
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