“But if a civilization is trying to be noticed....”
I think that any scientist or other individual with influence who proposes that we want to be noticed is hopelessly naive, and it’s frankly a danger to the very survival of our species in the future. We need to be a star faring civilization, one with trillions of people spread out over dozens or hundreds of star systems, before we can risk contact with other Galactic civilizations. To do so sooner is the height of foolishness.
Of course, if they contact us first, all of this is a moot point. But we should not be the ones who are initiating contact at a point when we can barely get off of our planet in small numbers, and where significant numbers of people on the planet are still incredibly primitive.
I always wonder, when I hear talk of all those many planets where people not only exist, but some of which are far advanced beyond Earth -— did those folks not have enough curiosity to listen to the serpent, and take a bite of that apple, (in which case they’d have no need to advance) or are they just made up of people without free will? (Or worse yet, completely evil and irredeemable) Because there’s only one Jesus, and he only died once for all people here on earth. So, what -— God’s truth only applies to us? (These questions coming, of course from one who believes God is the creator of ALL).