Just one bit of meaningful economic data so far this week: The American service sector grew in September for the first time in a year. The Institute for Supply Management’s nonmanufacturing index scored 50.9 last month, just 9/10ths of a point above the growth/contraction tipping point. That certainly isn’t a booming service sector, but having contracted for the last 11 months… we’ll take it.

“The Chicago Fed’s national activity index,” notes our macro adviser and fellow data dork Rob Parenteau, “continues to point to a second-half 2009 real GDP recovery. With the September release, investors focused on the index — a composite of more than 80 monthly indicators that provides a reasonably good proxy for real GDP momentum — slipping to -0.9 from -0.46 the month before. We have never seen this index climb consistently straight up after a recession month after month, and this decline is well within the range

Is the recession technically over? The strongest argument for recovery we’ve seen yet… Rob Parenteau shares his new macro economic forecast… “Told you so!” writes Byron King — “breaking news” he and The 5 scooped in March 2008… Plus, Chris Mayer’s latest contrarian play…

Our forecast today: The government and mainstream media will soon be calling the end of the recession. Leading this feeble cause is the latest ISM manufacturing index, probably the most powerful argument for recovery we’ve seen yet:

This morning, the ISM said its gauge of manufacturing activity had risen to 52.9 in August – out of contraction for the first time since the recession began and the highest score since June 2007. Of course, things are a bit different now, but over the last 60 years, when the manufacturing sector returns to growth, the recession has already ended. That prospect