James H. Fowler；Nicholas A. Christakis

4692 learners

Written by Nicholas A. Christakis and James H. Fowler, *Connected* dives deep into the hidden architecture of social networks and their profound impact on every facet of human life. Drawing on decades of research and real-world case studies, the book uncovers core principles like the three-degree rule—how your choices ripple through friends, friends of friends, and friends of friends of friends—and explains how network shapes (from bucket brigades to button networks) dictate connection dynamics. It explores how networks drive emotional contagion (spreading joy and loneliness alike), influence health behaviors (obesity, smoking, and disease transmission), shape romantic relationships, fuel economic trends, and even sway political outcomes. The authors also examine virtual networks, showing how online interactions mirror real-world social rules while amplifying both collective intelligence and risks. Ultimately, *Connected* reveals that we’re not isolated individuals—we’re nodes in a living, breathing superorganism, and understanding these connections can help us improve our well-being, build stronger communities, and navigate the interconnected world more effectively.

César Hidalgo

3.9537 learners

Drawing from a pivotal moment waiting for his daughter’s birth, César Hidalgo redefines information not as data, but as the physical order that shapes matter—from a baby’s blanket to a $2.5M Bugatti Veyron. Blending Boltzmann’s entropy theory with Shannon’s information science, he unpacks why ordered states are rare and how they resist the universe’s drift toward chaos. Beyond physics, Hidalgo explores the social and economic engines of information growth: how human imagination turns ideas into tangible products, how tacit knowledge and social networks constrain or enable technical progress, and why global inequality stems from uneven access to these knowledge networks. Introducing the Economic Complexity Index, he reveals how a region’s ability to build and leverage interconnected technical expertise predicts long-term prosperity. This book bridges physics, economics, and sociology to offer a radical new framework for understanding how information drives civilization’s evolution.