Excellent book describing how to decide in our volatile, uncertain, complex and ambiguous world! Simple and effective approach. To be read and reread!

Charles Didier, Transformative Business Leader at Huntsman Corporation

I've been using the Synergy4 method for over 10 years in a variety of contexts. Trained in numerous techniques, I can testify that I have never yet seen such spectacular results compared to other methods of facilitation for meetings.

Many times, I've facilitated working groups that have been going around in circles on a subject for one or two years, and in just 3 or 4 hours, they made a decisive breakthrough that led to major strategic decisions!

This method is far more powerful than more traditional approaches such as the six hats method, the Open Forum or the World Café, to mention only the best known. It acts on 3 levers:

• The first is the effectiveness of the process in delivering valuable results on complex, high-stakes issues, even in conflict-ridden environments.
• The second is the experience of a calm working relationship, active listening and a very special state of mind, when the collective moves from the logic of individual contributions to a state of collective intelligence.
• The third, more subtle, relates to the cultural experience that gradually penetrates the organization implementing this method in different work contexts. It helps to have an in-depth impact on the organization's managerial cultural transformation, while producing immediate positive results within this "cultural bubble," which is perfectly compatible with a pyramidal, silo-based corporate culture.

See also Olivier Zara's other excellent book, "The Tea Strategy," to understand how to gradually develop an organic, agile managerial culture based on collective intelligence management.

Stéphane Durand, Management Consultant, Founder of Synergies & Developments (France) specializing in support for complex projects, and of Swisstemic (Switzerland) for project management in the field of Smart Cities.

This elaborate method takes the best practices of co-development from the past 50 years both in Europe and North America and applies them to collective stakes. Thus, we can speak of strategic co-development as it applies to four types of complex situations (hence the name Synergy4). It can then unfold into 3 formulas: face-to-face, digital (useful when working remotely on the global scale) but also in a blended form (face-to-face with a laptop) using digital sprints. Synergy4 is at the heart of employees' engagement within any organization. A work to recommend to all decision-makers and managers confronted with complex situations in a world that is becoming more and more VUCA.

Guillaume Peter, consultant in collective performance, founder and entrepreneur at TIMBER CONSEIL

The Synergy4 method is very useful for business discussions, because by using collective intelligence, a group vision can be developed. This allows me to make better decisions faster and increase the level of trust of the team and the organization.

Daniel Blanchette, Communication and Management Consultant

A very didactic, pedagogical, inspired book... which presents an excellent method for managing complex situations. It invites the manager to take a position of humility without losing its legitimacy!

Chrystèle Verfaille, Head of Transformation and Development Projects at BNP Paribas