We interpret Φ A as the contribution to the total energy (the Hamiltonian) associated to the interaction among all the points of finite set A. Then H Λ Λ Φ Φ ( ω ω ) as the contribution to the total energy of all the finite sets A that meet Λ Λ . Note that the total energy is typically infinite, but when we "localize" to each Λ Λ it may be finite, we hope.