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This is the fundamental problem when considering this question, isn't it? We are viewing the question from inside our own heads and experience. It's like asking a deaf-from-birth person what it is like to be deaf... I mean... what else do they have to compare it to? It's all they have ever known. If we look at the math of HUMANS traveling across the galaxy, then the distances and times become insurmountable. But what about beings with longer lifetimes? Or a predictable hard-coded evolutionary path, so you equip your ship with microbes, and eventually people step out at the other end of the trip. And how do those beings "connect" with the ones that sent them? And why were they sent to us?