In the penultimate scene , Morris questions him again about " unknown knowns , " and the definition given by Rumsfeld has inverted , a discongruence the director is quick to point out , and which Rumsfeld acknowledges : " unknown knowns " are " things that you know , that you do n't know you know . " As the documentary closes , Morris asks Rumsfeld why he agreed to the interviews . Rumsfeld responds , " That is a vicious question . I 'll be darned if I know . " '' The Unknown Known '' was screened in the main competition section at the 70th Venice International Film Festival , and premiered at the Telluride Film Festival on August 29 , 2013
70th Venice International Film Festival
70th Venice International Film Festival
The Unknown Known