In a seminal 1976 paper Tom Kibble pointed out that, in cosmological phase transitions, causality precludes coordination between local choices of broken symmetry, and, as a result, formation of topological defects is all but inevitable. I shall discuss consequences of this Kibble mechanism for condensed matter physics, where its experimentally testable extrapolation is being studied. [Symmetry and Fundamental Physics - Tom Kibble at 80]