For all intents and purposes, all this research shows that developed nations are on the downward-sloping portion of the Rahn Curve.

FORBES: Study From Swedish Economists Allows Us To Quantify Cost Of Bush-Obama Spending Binge

In their vivid imaginations, they see upward-sloping supply curves, downward-sloping demand curves, and all the implications that arise from these and other assumptions.

FORBES: Marketing vs. Economics: Gymnastics or High-Wire Act?

Look at it from the side to see the angles at their most extreme: the sharp, downward-sloping nose and a low bonnet show off muscular wheel arches and gaping side vents.

FORBES: Ferrari Debuts LaFerrari, Joins McLaren, Porsche In Hybrid Hunt

There are a few differences between the two, besides the cut-off top: In silhouette, the Roadster has a downward-sloping nose and a lower, smoother rear end that give it a slightly more polished look than the coupe.

FORBES: World Debut: The Beautiful BMW Zagato Roadster