If life exists out there and it can come here from lightyears away, It should be intelligent enough to understand us just fine. We produce billions of hours of research materials that we project out on waves for our planet to see. Why wouldn't they be able to collect and study the language patterns and decipher our many languages? It seems nonsensical to imagine flying lightyears on crafts developed far beyond our understanding of the basic physics of this universe we inhabit.  imagine flying lightyears on crafts developed far beyond our understanding of the basic physics of this universe and not understand the words and actions of every being existing one this beautiful rock. They probably understand the sea life better than we do IF they have come here from lightyears away. I know the first thing I'd do is try and have a basic understanding of  the language. Unless I was hostile, then why understand if you intend to destroy. Either way, if they are here, they understand us. They obviously can do things that our physics say WHAAAAAA??? at....