Herrero says that collaborative spaces in organisations can happen by design and they happen spontaneously. They can also be either formal or informal.
Whilst most change management approaches focus on the 25% of interactions that happen in the planned formal space, he focuses our attention on how to work through the 75% of work conversations that happen in the informal spontaneous problem solving space.
Well that makes sense. This book is absolutely worth reading. It is full of interesting things like what network science tells us and how to create social tipping points.