Riders take on obstacles in showjumping.
Experts have focused on obstacles including child labor, a worldwide teacher shortage and the effects of war and instability.
The class will take on obstacles like a dozen or so railroad ties, a two-foot-deep water trough, whoops, and later, a stretch of deep, wet sand.
In order to move forward, they will be taking on obstacles that have existed within themselves for years but they're only starting to see now.
Before moving, put the stirrups up to prevent them knocking against the horse or getting caught on obstacles.
"It's a lot more fun on obstacles," he said.
"Adults only fixate on obstacles about a third of the time, and 4- to 8-year-old children fixate on obstacles about 60 percent of the time, but it's remarkable that infants can even navigate without looking," Mr. Franchak said.
Curiously enough, the onset of turbulence in the boundary layer can reduce the drag force on obstacles.
That conclusion comes from the annual report of the United States Trade Representative (USTR) on obstacles to American exports.
The dark-side predictor, which is officially named the Leadership Challenge Profile, focuses on obstacles to success.
In the shape of an ellipsoid about the size of three refrigerators, it can swim in any direction and is unlikely to snag on obstacles.
