Social influence as ferromagnetism — agreeing pairs convert neighbors; watch consensus emerge from disorder
Rule: If sᵢ=sⱼ (agree), then neighbors sᵢ₋₁ and sⱼ₊₁ adopt sᵢ
Equivalence: Maps to ferromagnetic Ising model with Kawasaki dynamics
Fixed points: Consensus (all +1 or all -1) or frozen minority
Exit probability: E(p₀) → step function for L→∞; for finite L ~ smooth sigmoid