Sure, there are plenty of startups within a short hop of F stops in DUMBO and the Flat Iron districts, but there are even more in F-free Soho and Union Square.

FORBES: Sorry, New York Doesn't Have A "Silicon Subway Line"

The island can be reached from Manhattan on the F train, only three stops after Rockefeller Center, but according to a 2009 report on the island's infrastructure conducted by the department of urban affairs and planning at Hunter College, the subway was even then running at full capacity.

WSJ: Louis Kahn | Four Freedoms Park | Louis Kahn's Four Decades to Freedom | By Julie V. Iovine