  We introduce a novel type of contrarian agent, the balancer, to Galam model
of opinion dynamics, in order to account for the existence of social skepticism
over one-sidedness. We find that the inclusion of balancers, along with
majoritarian floaters and single-sided inflexibles, brings about the emergence
of a critical point on parametric plane of the dynamical system. Around the
critical point, three distinct phases of opinion dynamics separated by
discontinuous changes are found.
