http://m.technologyreview.com/news/516501/in-innovation-quest-regions-seek-critical-mass/
There is a spot just off the MIT campus in Cambridge, Massachusetts, that is home to what may be the world’s densest concentration of startup companies. There, near the edge of Kendall Square, the founders of more than 450 startups crowd into nine floors. Some occupy common rooms where the rule is « Grab any seat you can. »