Since real electrons possess spins and are not solely described by electrostatic interactions, we should begin by introducing the interactions between spins. Explaining why it is so complex and remains analytically unachieved to derive Friedel oscillations for magnetic particles with spin is crucial. However, the Ruderman-Kittel-Kasuya-Yosida (RKKY) effect provides insight into how two spins interact. We remind readers of this and encourage them to take on this challenge.