This example visualizes a social network as a force-directed graph, showing friendships between ten people with labeled nodes and directional links. The layout is computed using `d3.forceSimulation` with link, charge, collision, and center forces, while nodes are rendered as large cyan circles with SVG text labels. Links are drawn as lines with arrow markers to indicate direction, and nodes are draggable via D3’s drag behavior, with a hover effect that thickens the node border. The code loads data from a JSON file and uses SVG for all rendering.