Recent surveys show that more than half of American entrepreneurs share ownership in their business startups rather than going it alone. Yet the media and many scholars continue to perpetuate the myth of the lone visionary who single-handedly revolutionizes the marketplace. In The...

[...]This paper builds primarily on research on agglomerationeconomies. Much of the empirical work on agglomeration hassought to estimate the effect on productivity of anestablishment’s local environment. The estimation hassometimes involved direct estimates of productivity(Henderson 2003) and...