>http://dx.doi.org/10.1016/j.intell.2005.04.002 http://dx.doi.org/10.1016/j.intell.2005.04.002 >correlational study Without trying to adjust for confounders,

>http://dx.doi.org/10.1016/j.intell.2005.04.002 http://dx.doi.org/10.1016/j.intell.2005.04.002 >correlational study Without trying to adjust for confounders, this study makes as much sense as "heat is bad for GDP".