Yeah, and you have to keep in mind that "human" in the Culture is an extremely broad category. A Klingon or a Ferengi or even something substantially weirder wo

Yeah, and you have to keep in mind that "human" in the Culture is an extremely broad category. A Klingon or a Ferengi or even something substantially weirder would count as human to the Culture. When they visit 1970s Earth in State of the Art, they have to be very selective about who they send because many of them would stick out like a sore thumb even after cosmetic surgery.