This document summarizes three reaction papers written by a student on architectural theory readings. The first paper discusses Louis Wirth's concept of "urbanism" and how population size, density and diversity influence social behavior. The second paper focuses on Robert Venturi's "Learning from Las Vegas" and how symbolism is prioritized over form in Las Vegas architecture. The third paper examines Juhani Pallasmaa's view that modern architecture has become too abstract and detached from deeper meanings, and the importance of evoking emotional and imaginative experiences for users.