Figure 1. Snapshots of numerical solution of the mean-field equation as defined by Eq. (4).

Snapshots are taken at t = 25, 50, 100, 300, the scale of opinion domains are much bigger than r = 0.01. Black stands for opinion A, white stands for opinion B and gray stands for the coexistence of two types of opinions. The consensus is achieved at t ≈ 10⁴.