Global IT Spending Statistics: Projected 2013 Spending At 3.7 Trillion USD

We had spotted 2012 IT spend stats - Gartner has now come up with this year's projections, increasing its forecast for worldwide IT spending in 2013. Gartner now says that that worldwide IT spending will hit $3.7 trillion in 2013. (Source)

How do we digest this number? IT is so huge, we should probably just give up. But here is one attempt - not that this means anything, but that number is roughly Germany's GDP.