Smart technology is now pervasive in society and has partnered with people on every level, yet its social and cultural implications are easily overlooked by the majority. In this thesis, I work on building a silent partnership between humans and smart technology and creating smart devices/systems as silent partners by revealing the complexity of smart technology and tackling the current issues of unilateral transparency, a lack of negotiation, and the dynamic of the sense of control. This work draws on varied fields such as critical cultural studies, science and technology studies (STS), media studies, information studies, sociology, psychology, and design and consists of three main themes: materiality, politics, and affect. In addition, I utilize theoretical frameworks such as posthumanism, actor-network theory (ANT), assemblage, materialism, and affect theory to analyze the underlying factors and relationships among human and nonhuman actors such as technology companies, governments, engineers, designers, users, as well as infrastructure, algorithms, and smart devices/systems. Finally, I offer four roles to rethink smart technology (an actor, a fluid, a peer, and a silent partner) and propose 15 design principles to redesign smart devices/systems as silent partners.