Nothing is more desperate, more poignant, more romantic than a message in a bottle. You visualize a beautiful young woman or a handsome young man on a lost island writing a letter, possibly with a description of the constellations he sees in the night sky, tracking them in their arcs from sunset to sunrise, possibly including an inventory of the few remaining supplies, and possibly mentioning the young family waiting at home, the love that was abandoned or passed up, or the wrong which was never admitted.
You visualize these things written on a ragged scrap of parchment rolled into a cylinder, stuffed into a bottle, sealed with a cork, and cast in a long arc over the waves crashing against the beach, into waters moving in a deeper current away from the island toward someone also handsome or beautiful who will find the small bottle floating between the waves in the immenseness of the ocean stretching from horizon to horizon, someone who will be able to decipher the strange markings on the parchment, someone who will care enough to drop everything and change course, setting sail for the lost island where the desperate writer waits before it is too late.
And what is the Voyager 1 space probe, launched from Earth in 1977, reporting back to us all it sees until 2025 when it will continue its blind inertia towards the star Gliese 445 somewhere in the constellation Camelopardalis about 40,000 years from now, carrying a gold-plated audio-visual disc in the event that the spacecraft is ever found by intelligent life forms from other planetary systems, but a message in a bottle cast into the endless seas of space, even smaller and darker than a bottle floating between the waves on a moonless night?
But if it is found, the Voyager 1 that is, will the finders be smart enough to decipher our strange markings? Will they be kind enough to come rescue us from our loneliness and ourselves? Will they laugh at our primitive efforts or even recognize them as worthy of scrutiny? If they do come, will they come in peace or will they come as we do, wreaking havoc and extinction upon us? We are the most destructive species that has ever lived on our planet. Are we the norm in our galaxy or in our universe? If not, then how do we expect our alien rescuers to welcome us into the family of worlds? But if so, then we should cease shining our beacons at the stars and our explorations of distant worlds before they detect us and come to root out the risk to the universe while it is still small and confined.