The crack,” she murmured, picking up a piece of chalk, its white dust a ghostly echo against the blackboard's darkness, “That’s the key, the bridge between the realms, the portal through which particles emerge from inner-space and waves collapse from outer-space.” She drew a vertical line, its jagged edges symbolizing the chaotic energy of this interdimensional gateway. On one side, she labeled it "Inner-space," on the other, "Outer-space." And in the middle, a small, shimmering circle, a symbol of the singular infinity, the instantaneous present, where the exchange occurred. She stepped back, her gaze fixed on the diagram, her mind racing through a labyrinth of possibilities. intricate, elegant, highly detailed, sharp focus