The eighteenth-century English coffeehouse fertilized countless Enlightenment-era innovations; everything from the science of electricity, to the insurance industry, to democracy itself. Freud maintained a celebrated salon Wednesday nights at 19 Berggasse in Vienna, where physicians, philosophers, and scientists gathered to help shape the emerging field of psychoanalysis. Think, too, of the Paris cafés where so much of modernism was born; or the legendary Homebrew Computer Club in the 1970s, where a ragtag assemblage of amateur hobbyists, teenagers, digital entrepreneurs, and academic
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