Right now San Francisco is in the greatest boom period in 130 years, greater than the dot.com era. The new Internet is at home in San Francisco along with the countless small and tiny businesses that make the modern commercial world work. (I may have had something to do with that.)
PS: After I wrote this I came across Robert Barro's careful, authoritative mathematical analysis of stimulus spending and tax rate cuts:
"The bottom line is this: The available empirical evidence does not support the idea that spending multipliers typically exceed one, and thus spending stimulus programs will likely raise GDP by less than the increase in government spending. Defense-spending multipliers exceeding one likely apply only at very high unemployment rates, and nondefense multipliers are probably smaller. However, there is empirical support for the proposition that tax rate reductions will increase real GDP."Mr. Barro is a professor of economics at Harvard and a senior fellow at Stanford University's Hoover Institution."