One statement in the Crain’s economic outlook package really caught my eye and deserves special attention. Brooklyn’s job gain between 2010 and 2016 was 40%, the second fastest growth rate of any county in the country. The city has neither understood nor taken advantage of what that means.

Here are the numbers as compiled by economist Barbara Byrne Denham of the real estate firm Reis:

Borough Job gain % change Rank Brooklyn 195,223 40% 2 Queens 155,354 32% 9 Bronx 66,756 29% 13 Staten Island 22,017 24% 26 Manhattan 135,681 6% 198

The numbers show that not only has the New York City economy in the Bloomberg-de Blasio boom become diversified by industry (notably, less dependent on Wall Street) but it has diversified geographically with the strong growth in jobs outside Manhattan.

Two questions come to mind immediately: How does the city take advantage of the geographic diversity? And what policies should be implemented to make the inevitable economic downturn less severe?

One key signal is imminent: whether Amazon puts New York on its short list of potential sites for its second headquarters, due before the end of the year. And if so, what location most interests the retail giant? The conventional wisdom is New York won’t make the cut. That will say loudly that the city has not taken advantage of the geographic diversity of its economy.