The mathematics classroom is particularly vulnerable to these judgments of perfectionism, with endless evidence of students and teachers believing that mathematics is based on an ultimate truth or a single, objective, unique answer. School mathematics still favors students' participation in rote procedures, memorization, and using only a few strategies to solve problems (Boaler, 2016; Dunleavy, 2018). This narrow idea of what mathematics is reduces students' abilities to enact their own agency to explore mathematical ideas on their own and to gain mathematical authority (Hicks et al., 2023). Any limitation on exploring what counts as mathematics is in conflict with students' development of their own creative mathematics identities as learners (Goffney & Gutiérrez, 2018). In this article, the authors present a case for dismantling perfectionism in mathematics teaching and learning. They share how students framed perfectionism during a task, how the teacher used questioning to redirect student thinking, and how the class welcomed unfinished thinking.