A simulacrum is not a copy of the real, but becomes truth in its own right: the hyperreal. According to Baudrillard, what the simulacrum copies either had no original or no longer has an original, since a simulacrum signifies something it is not, and therefore leaves the original unable to be located.
When it comes to fiction, space is a simulacrum. For example, Ian McEwan’s novel is set during the Second World War. This conception of space is an imagined one that comes to stand in the place of any sense of reality.