It's hopefully not going to come as a big surprise when I say this, but economically speaking, Europe has seen brighter days. It's a far more complicated issue than we can really address in these hallowed pages, but let's just say off the bat that 25-hour work weeks are really never conducive to economic growth. Nevertheless, our friends across the pond clearly still have some lessons to teach us, as evidenced by Swedish House Mafia's Sebastian Ingrosso singlehandedly stimulating some serious spending at Greystone Manor last night. How are we so sure his set had such an impact? Let's count the ways.