Ambiguity expands the possibilities for diverse interpretations, driving the production of new contexts. Focusing on the virtue of this ambiguity, 《Undefined Area》 collects instances of ambiguity in media and visualizes them through imagery. In this undefined zone, ambiguity is both unsettling and delightful, unfamiliar yet familiar, and irregular yet orderly. The author hope that readers will experience this and discover the positive value of ambiguity.