The document discusses wearable technology and issues around open vs closed hardware/software/data models. It notes that wearables can be used for health, communication, and environmental monitoring. However, closed systems controlled by big companies are opaque and competitive, while open systems empower individuals and collectives through transparency and collaboration. The rise of DIY and maker communities is discussed as enabling exploration and problem solving through accessible tools, platforms, and knowledge sharing. Examples shown include Arduino, open source textile projects, and Safecast's collaborative radiation monitoring in Japan.