Liikkuva maailma (“fluid world”) is a collection of articles edited by Mikko Lehtonen, the Professor of Media Culture at University of Tampere. It is a result of the work of a research development programme by the same name at University of Tampere (2011–2013), where new conceptualisations were created about the current world characterised by movement. The “fluidities” studied were concrete – moving people, messages and objects – and symbolic – entanglements of politics, economics and culture, as well as movements of ideologies and thoughts. As Lehtonen points out in his introduction; the researchers urgently need a new kind of imagination and empathy to understand the world, where things can appear to be present even when they physically are not.