re: Astronomers may have found giant alien 'megastructures' orbiting star

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There is a theoretical Types IV and V civilizations, and unlike 2 and 3, there's a good chance we wouldn't be able to detect it. These get more into the level of :drumroll: Interstellar aliens where they are extra dimensional. But the logical way most aliens would gather energy is through planets and stars, and that could be detected.

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But you're speaking in absolutes. I'm saying you can't say things like this:

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that could be detected

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Even if we had the technology to detect and monitor that kind of shite, we'd still have to be looking in the right place(s).