constituents).

One of most intriguing effects is the hipster’s one, in which a society of contrarians tends to behave in a uniform way [@hipster]. Clearly, “conformist hipsters” always change their behavior, when they realize to be still in the mainstream, but since they do so all together, they remain synchronized: the parallelism is a crucial element of such a behavior.

Finally, the fifth ingredient is homogeneity. There are many possibilities of introducing mixtures of agents or spins with different coupling. We investigate what happens when one mixes ferromagnetic and antiferromagnetic interactions, and we shall show that this mixture promotes a “bubbling” behavior in the bifurcation, meaning that the bifurcation appears first for intermediate values of the parameters, similar to what happens with asynchronism.

In previous studies we presented “reasonable contrarian” agents whose response to the average opinion of their neighbors is nonlinear and discusssed the collective behavior of societies composed of reasonable contrarians only and by mixtures of these agents and nonlinear conformists [@bagnoli2013; @bagnoli2015]. The rationale was that in some cases, and in particular in the presence of frustrated situations like in minority games [@minority; @minority1; @minority2; @minority3], it is not convenient to always follow the majority, since in 