Physics 583 (QFT II) Spring 2021 zoom lecture on Thursday April 22, 2021. We continued the discussion of elementary lattice gauge theory. We did a quick review of the behavior of the Wilson loop in the strong coupling and weak coupling regimes of the ℤ_2 gauge theory, derived the area and perimeter laws. We also discussed  Elitzur's theorem and its implications. We discussed the Higgs phase and its observables and its relation with confinement.