Gidi Grinstein offers a bird’s eye systemic view of Jewish society, exploring the secret of Jewish survival, resilience, security, prosperity, and leadership during past millennia. Gidi argues that this secret stems from a unique societal hybrid between old and new, tradition and innovation, rigidity and flexibility—Flexigidity. He shows how this hybrid exists in many areas of Jewish society including mission, community, law, and membership, explaining how this legacy may be key to Israel’s future prosperity and security.