premise: The US economy grew at a 2.0 percent rate in the third quarter, the government reported Thursday in a slight downward revision of gross domestic product.
  The Commerce Department, in its final revision of growth in the July-September quarter, notched down its earlier estimate of a 2.2 percent annualized pace.
  Wall Street analysts had on average expected no revision from the 2.2 percent figure.
  In any case, the growth was the slowest since the final quarter in 2005 and a deceleration from the 2.6 percent pace in the second quarter.
  The revision came from a slight downward adjustment in the estimate of consumer spending growth in the quarter to 2.8 percent instead of 2.9 percent.
   What is included in the revision?
hypothesis: notched down its earlier estimate of a 2.2 percent