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Old 03-May-2008, 01:40 PM
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eburacum45 eburacum45 is offline
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But what if very advanced civilizations can mask their achievements?
Why would they do that? Do they fear that they might be discovered? That seems to imply that something out there is worth hiding from.

Quote:
Or they exist but they are too far.
In that case they are rare, or have only emerged recently, and have not existed long enough to get here. In both cases, one has to wonder 'why'?
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