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			 Now strangers use Getaround.com to book Gutmann’s $6-an-hour car for 
			errands and travelers stay in his newly refurbished basement 
			apartment, listed at $115 a night on AirBnb. Gutmann and a business 
			partner are developing a new app that lets people get more use out 
			of their possessions. 
			 
			The apps mean "pretty significant productivity gains for a full 
			range of things, from empty rooms to idle cars and bikes and all the 
			other things that are marooned in people's garages," Gutmann says. 
			 
			That "sharing economy" has lured billions of dollars from investors, 
			yet so far, it barely seems to register in U.S. economic data. 
			 
			Productivity - an area of the economy particularly sensitive to 
			technological advances - has grown at just 1.25 percent a year since 
			the 2008-2009 crisis, half its pre-crisis average. 
			 
			The decline has some economists arguing that official figures are 
			simply failing to capture the effects of the sharing economy and 
			other innovation, and that true productivity growth is much higher. 
			  
			If that is the case, then the Federal Reserve should feel more 
			comfortable raising its interest rates for the first time in almost 
			a decade. 
			 
			But here is the catch: better productivity also lowers business 
			costs. 
			 
			So if the sharing economy makes things easier to find and cheaper to 
			obtain - for example by using AirBnb's user-generated ratings system 
			- it may also cause official data to overstate inflation, leaving 
			the Fed further away from its 2 percent inflation goal. 
			 
			Consequently, the effects of any possible productivity 
			understatement could effectively cancel each other out from the 
			point of Fed policy. 
			 
			"If you think we think we are mismeasuring productivity as too low, 
			you are also arguing that inflation is lower than we are measuring. 
			This is a pretty important issue," San Francisco Fed President John 
			Williams said earlier this month. 
			 
			However, for Williams and several other Fed policymakers, the 
			decline in productivity growth from the pace of the late 90s to 
			mid-2000s is real. 
			 
			That view implies slower potential economic growth and suggests that 
			subdued wage growth may be part of a "new normal" rather than a 
			hurdle to raising short-term interest rates. 
			 
			INFLATION PARADOX 
			 
			The sharing economy, also called a "gig economy", has grown quickly. 
			Listings on AirBnb, by far the largest company offering peer-to-peer 
			room rentals, now top 1 million, more than the biggest hotel chains. 
			Uber, the largest firm in the transportation-sharing sector, 
			operates in hundreds of cities and is valued at $50 billion. 
			 
			Still, it is hard to put too much stock in the idea that these two 
			companies, or their much smaller rivals, are making much of 
			difference to the economy on their own. 
			 
			"There's the potential for things to change in a large way," says 
			Joshua Gans, chief economist of the University of Toronto's Creative 
			Destruction Lab, of the effect of the "sharing economy" on 
			productivity and growth. "But those things seem way into the 
			future." 
			
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			Some economists argue that technology's impact on productivity is 
			underestimated in part because government number crunchers are not 
			adequately factoring in quality improvements. 
			 
			Two Goldman Sachs economists recently argued just that, and 
			concluded that inflation as measured by the Fed's favorite gauge may 
			actually be well below the current 1.25 percent estimate. 
			 
			Fed policymakers and their staff, for the most part, are having none 
			of it. 
			 
			John Fernald, a leading researcher on productivity on the San 
			Francisco Fed's staff, discounts mismeasurement as the cause of the 
			drop in productivity, saying there is no reason to believe any 
			miscalculations are any greater than in the past. 
			 
			To Fernald, the most likely reason for any understatement of 
			productivity is a difficulty in anticipating how much a new 
			technology could change the world. That is what happened in the 
			1990s, when it took years for businesses and households to make 
			enough use of the Internet for it to show up in the data. 
			"No one saw the productivity slowdown in the 1970s. No one saw the 
			temporary productivity boost in the mid-1990s," Fernald said in an 
			interview. "Statistically there are huge uncertainties about that 
			which is just inherent in the fact that it’s hard to figure out 
			which innovations are really going to be important." 
			 
			Productivity data is notoriously volatile, innovations take years to 
			feed into the economy, and the damage to productivity wreaked by the 
			recession may prove not so permanent after all, as new technologies 
			help save time and money. That is the view of Fed board economist 
			David Wilcox, one of the central bank's productivity optimists. 
			  
			
			  
			 
			Wilcox, who did not agree to be interviewed for this story, but 
			whose published papers make clear his views, has argued that a large 
			part of the drop in productivity growth since the 2007-2009 
			financial crisis is reversible as demand returns and start-ups 
			embodying the latest technologies get the funding they need. 
			 
			(Editing by David Chance and Tomasz Janowski) 
  
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