Joined-Up Thinking is the first book by writer and artist Stevyn Colgan. It is based loosely upon the idea of Six Degrees of Separation first put forward by Frigyes Karinthy and later explored by Stanley Milgram and Richard Wiseman, in that everything and everyone in the world can be connected in some way. The book takes a light-hearted and humorous series of 'cyclic journeys through the land of trivia'.