This document discusses co-working and how it fosters serendipitous opportunities and connections between people, leading to open collaboration and a transformation of stakeholders. It notes that co-working spaces provide both paid seating and "social capital seats" to facilitate the sharing of skills, knowledge, and experiences between members. The document also describes a "serendipity machine" algorithm and online tools to recommend unknown but relevant people, events, and opportunities to co-workers. Statistics are presented on the growth of co-working spaces and their benefits, such as helping members get new jobs or start new companies. Collaboration between members of the co-working "ecosystem" is highlighted as a key aspect for networking and professional activities