Physicist Alexander Migdal continues his Institute for Advanced Study series on planar QCD with the fourth installment, recorded at Rubenstein Commons as part of the institute's informal Matrix Pizza Night talks. Migdal works through his geometric approach to the planar limit of quantum chromodynamics, building on loop dynamics introduced in earlier lectures. The core problem here is how to place Majorana fermions on a rigid surface so that non-planar intersections cancel through the Pauli exclusion principle, a construction he argues recovers asymptotic freedom, the property that makes quarks behave as nearly free particles at short distances. The talk is dense with equations and geometric reasoning rather than slides or demonstrations, aimed at an audience already following the series rather than newcomers to gauge theory. At 81 minutes it is a working physicist's blackboard argument in progress, useful chiefly to viewers tracking Migdal's program for solving planar QCD geometrically rather than as a freestanding introduction.