The baryon asymmetry problem is resolved using a model where the difference between normal matter and anti-matter is defined within a pre-fermion loop-based system. Also explained is where anti-matter is hiding in plain sight. Within the loop system only the sign of net loop charge differentiates matter from anti-matter. If a proton, as a stack of two positively charged quark loops and one negatively charged quark loop, is defined to be matter then a negatively charged electron loop is anti-matter. A charge-neutral neutron, as a stack of two negatively charged quark loops and one positively charged quark loop, is also anti-matter. Stable nuclei are built with equal numbers of matter and anti-matter nucleon components. The neutrino could be defined as matter or anti-matter, however, with the difference between a neutrino and an anti-neutrino of at least 60 degrees of loop rotation, it is not a Majorana fermion. The overall charge-neutral universe has a balance of matter and anti-matter and therefore baryon symmetry overall, although some volumes may be composed primarily of matter or of anti-matter charged nucleons. The combination of matter and anti-matter does not annihilate on contact — no loops or loop components are ever destroyed. The historic inconsistencies of definitions and treatments of negative energy, negative matter and anti-matter are shown to derive from a limited point-like model of particles and the loose definition of energy.