What design change characterizes a "Level 1 (parametric optimization) design"?

A "Level 1 (parametric optimization) design" refers to making specific adjustments to an existing product rather than overhauling it entirely. This type of design focuses on optimizing certain parameters to improve performance while retaining the fundamental structure. Creating a thinner walled plastic bottle exemplifies this approach, as it modifies an existing design to reduce material usage and enhance sustainability without necessitating a complete redesign of the bottle’s overall shape or function.

This method aligns with sustainability goals because it often results in less material waste and decreases the product's environmental impact. Reducing the thickness of the bottle walls can lead to significant reductions in plastic consumption while still maintaining the functionality of the bottle, hence embodying the principle of parametric optimization effectively.