Which product design innovation did Raymond Loewy introduce that revolutionized retail by making previously utilitarian objects more visually appealing to consumers?

Throughout history, certain product designs have revolutionized entire industries and changed how we live. The intersection of invention, discovery, and thoughtful design has led to some of the most significant commercial successes of all time. This question explores how one inventor's approach to product design created a paradigm shift that influenced countless future innovations.

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Streamlining: applying aerodynamic principles to everyday objects like pencil sharpeners and refrigerators
Planned obsolescence: designing products with intentionally limited lifespans
Skeuomorphism: making digital interfaces resemble their physical counterparts
Biomimicry: designing products that mimic structures and materials found in nature