Two men sat at the water’s edge. Behind them the Retrograde building climbed skyward in a dazzle of mist shrouded lights growing vague in the night. The landing held several empty tables under sodium lights. Bottles of water and food wrappers littered their tabletop, all consumed while they worked to understand the impossible. They toiled relentlessly; arguing facts and suppositions until they felt certain of their theories, then wrote them in a notebook with precision and detail. Their lives depended on their work and both men knew their fate if they were wrong.

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By morning they were gone as mysteriously as they had appeared.