“In paired chapters on places and people―multi-locale pilgrimage sites and personal trajectories as social hieroglyphs―Murillo introduces us to the significance of hacker spaces, including Noisebridge in San Francisco, Chaihuo in Shenzhen, and Tokyo Hacker Space. They are driven, respectively, to create: radical open communities; networks of gift-commodity-gift exchange; and pro-data neutrality of open science collecting and visualizing. Murillo’s beautifully written book provides important material for thinking about how to open rather than close the creative commons, and the history of the global circuits and fluorescence of hacker and maker spaces.” ―Michael M. J. Fischer, Massachusetts Institute of Technology