This visualization displays a Facebook social network using two coordinated views: an adjacency matrix showing connections between users, and a force-directed node-link diagram. The matrix uses colored cells to indicate relationships, while the network graph reveals community structure through node coloring based on degree centrality. Built with D3 v5, the visualization employs `d3.forceSimulation` for layout and `d3.forceLink` for edge positioning. Users can zoom and pan the network view, while clicking nodes or matrix cells logs their identity. The underlying data is loaded from a TSV file listing Facebook friend pairs.