Let us ponder over the fact that the man himself is part of nature. And if certain amount of anthropomorphism is unavoidable even where it comes to the subject of another mind, it is logical to assume that a culture medium is part of the same nature that surrounds us. The world is one. But even then the claimed subject matter to the consideration we still interested in one thing, common as equally hypothetical exposure for us, and for a hypothetical entity if there is a plurality of non-contiguous with each other universes. After all, we are talking about the contact of civilizations, but not about bans on the interaction between them.