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Andrew Adams's avatar

Why build a wall and pump? Just start dumping rocks at the center in the planned volume or a few % more to account for subsidence at the edges to the known angle of repose. Voila, your land mass for less. And it would be quicker - probably done by next April Fools' Day.

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Frank Jördens's avatar

I don't understand why you need to fill in crushed rock or sand. Just build the wall and be done? the entire area would be below sea level but that's not unheard of: The lowest spot in the Netherlands being nearly 7 m below sea level.

Guessing you'd have to keep pumping anyway. A question is how long it would take for rain input to turn water bodies from salt- to freshwater.

PS Understandable but shame to have it as an April Fool's thing. Seems sensible to me. An instance of pushback against innovation starvation (Neal Stephenson's phrase).

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