The power of agglomeration is such that San Francisco has been given a fresh lease on life. The strides in artificial intelligence (ai) have only strengthened its claim to be the innovation capital of the world. Its proximity to Stanford and the University of California, Berkeley, two ai centres of excellence, has helped infuse its startup scene with companies that deal in the technology. However, Only a few years ago social disorder, toxic politics, eye-watering housing costs and the pandemic were driving people away. Venture capitalists (vcs) were splashing more of their cash beyond the Bay Area. Tech workers abandoned their offices, and sometimes the city entirely. Can San Francisco rebuild itself ?

