In the case of an emergent phenomenon although there ill be no clear demarcation for when and where it begins relative to its substrate you can expect there to be a transitional band where the complexifying phenomenon on the lower level is doubled by the first adumbrations of the emergent one. If a stream of regular clicks is sped up you can hear the peculiar crossing into tone, and in the same you can hear jumbled sounds from an obscure source cohere into that of a voice as you approach. Nothing like this seems to happen with (waking) consciousness despite regular the experience of the mind regathering itself after sleep, but this is because you can't recognise consciousness except by way of consciousness. As a literary trope this effect can be pulled off precisely because the letters on a page can appear as lost fragments of possible words. The same emergence can't be mimicked with the moving image or via sound.