In the past things were either in your head (subjective, imaginary, fantasy) or else they were part of the outside world - cold, hard, concrete materialistic reality. If you want to look at it in terms of poetry, there was surrealism and objectivism. Now there's the veil of the virtual in between. The old opposition between inner and outer doesn't quite capture it, especially as it contains elements of both. It's real but not concrete.