I would imagine that aliens wouldn’t just show up and try to figure things out from scratch. If they really wanted to communicate peacefully, I’d guess that they’d hide behind a nearby celestial object and listen to our radio signals. They’d want to minimize uncertainty and fear. By the time they let us detect them, they’d probably already be fluent in several major languages.
I would imagine that aliens wouldn’t just show up and try to figure things out from scratch. If they really wanted to communicate peacefully, I’d guess that they’d hide behind a nearby celestial object and listen to our radio signals. They’d want to minimize uncertainty and fear. By the time they let us detect them, they’d probably already be fluent in several major languages.