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Imagine you're the commander of a fleet of intra-galactic spacecraft, each from a different planet, each searching for other spacefaring cultures like themselves. Imagine that each of these crafts is home to thousands of people for whom you are responsible. Imagine that each of these spacefaring cultures has been traveling within your galaxy for generations, and in all that time only four other cultures have been contacted. Now imagine that suddenly, out of nowhere, a strange gigantic craft...