This paper examines the fundamental incompatibility between nudge theory, as developed by Richard Thaler and Cass Sunstein, and design, rooted in aesthetics and metaphor. While nudge theory seeks to influence human behavior through choice architecture, simplifying decision-making using behavioral economics and cognitive science, design operates within the realms of aesthetics, abstraction, and emergent interaction. The paper argues that the reductionist, outcome-driven methods of nudge theory conflict with the pluralistic, reflective processes central to design. Drawing on the philosophical works of José Ortega y Gasset and Graham Harman, this paper critiques the over-simplification of human behavior in nudge theory and its misapplication to design practices. Through case studies and philosophical analysis, the paper reveals that integrating nudge into design diminishes creativity and undermines the reflective, emergent qualities that define true design work. This critique calls for a reconsideration of how behavioral interventions are employed within the field of design.