IN _ASSEMBLAGE THEORY AND AFFECT,_ IAN BUCHANAN CONTINUES THE PROJECT HE BEGAN IN _ASSEMBLAGE THEORY AND METHOD,_ OF DEMYSTIFYING THE CRITICAL ELEMENTS OF THE WORK OF DELEUZE AND GUATTARI. He argues that the concepts of assemblage and affect, which were separated at birth, need to be reunited if we are to fully understand what Deleuze and Guattari meant by these pivotal concepts. To this end, _Assemblage Theory and Affect_ proposes three agenda-setting arguments that will change how we see the concepts of the assemblage and affect. 1. _Affect is a function of desire_ – its powers are the powers we attribute to desire. As such, like desire it should be considered a psychical agency. The assemblage, the body without organs and the abstract machine are all components of this psychical agency. 2. _Affect is a capacitating power_ – it empowers us to meet life. Affect is not the measure of our response to a given stimulus, it is rather the capacity we have to respond to a stimulus in the way that we do. This is the essential argument of Deleuze and Guattari's schizoanalytic project which is a kind of survivor's guide to late capitalism. 3. _The_ _capacitating power_ of affect depends upon the combinations of bodies without organs and abstract machines that we have been able to put together by means of the assemblages available to us. This is what Deleuze means by an ethics of desire. Buchanan outlines the meaning of both concepts for contemporary philosophy, art, cultural and critical theory and politics. In applying these theories to real life practices and experiences, these concepts are given clarity and force.