This example visualizes the Double Diamond design-thinking process as a series of connected, red polygon outlines. The code draws five distinct diamond shapes across the SVG canvas, each built from hardcoded coordinate arrays and rendered as closed line loops. Using D3 v5’s `select` and `range` modules, it maps raw coordinates to scaled positions before generating line elements via the `enter()` method. The visualization focuses on the geometric progression of the diamonds, representing divergent and convergent phases without animation or interactivity.