One day, democracy is irreversibly poisoned by social media, which empowers the radical right, authoritarians, and racist, misogynist trolls. The next day, the very same platforms are giving rise to a thrilling resurgence of grassroots activism. The new net delusion more closely resembles a psychotic delusion in the clinical meaning of the word, in which the sufferer often swings between megalomaniacal fantasies of control and panicked sensations of loss of control.