His documentaries like 'The Fog of War' and 'The Unknown Known' rigorously examine how evidence, testimony, and competing narratives shape our understanding of truth and reality.

He consistently challenges scientific rationalism and objective truth through films like 'Cave of Forgotten Dreams' and 'Grizzly Man,' exploring the tensions between empirical knowledge and human belief.

His essay-documentaries such as 'HyperNormalisation' and 'The Power of Nightmares' deconstruct how competing ideologies, scientific claims, and narratives have shaped modern society.