In March 2013, the U.S. government invented a new way of calculating GDP. The Financial Times reported that starting from July 2013, U.S. GDP would become 3% bigger due to a change in statistics. As this adjustment in GDP calculation is pretty significant, I will discuss the new items in the U.S. GDP, what the consequences are and how investors should act on this revision in statistics.GDP = private consumption + gross investment + government spending + (exports − imports), orThe government made a significant change in the gross investment number (I), which now includes R&D spending, art, music, film...