While quantum social scientists are divided on the question of whether social processes are physically quantum in nature, or just happen to be amenable to a quantum approach, there are a number of common ideas, themes, and concerns. The most fundamental is that, since its inception, social science has been based on a classical worldview, which needs to be updated in accordance with the teachings of quantum physics. In particular, quantum theory disputes key tenets or assumptions of the social sciences, which according to Wendt include materialism, determinism, and mechanism.