This book contributes to the discourse on planning theory by accentuating the perspective of public innovation. Extending planning theory's traditional two major perspectives - 'Communicate' and 'Calculate' - the book argues that contemporary planning theory should incorporate 'Innovate' as a third perspective. It highlights the multitude of new perspectives that innovative planning can bring to bear on planning theory, as well as showing how the interplay between the three perspectives - 'Communicate', 'Calculate' and 'Innovate' - can help to address vital issues in contemporary societal development.