How Could We Talk To Alien Life Forms?

Chances are when alien visitors show up, they won't speak any language we can recognize. We'll be lucky if they have recognizable music, like the aliens in Mary Doria Russell's The Sparrow. They may not have eyes or ears, as we understand them. So how can we prove to our first contacts that we're smart enough to talk to — let alone actually talk to them? Vote for your preferred method of dialogue!

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