"Episode 599: The Invisible Wall"

"Hernando de Soto wanted to figure out what was trapping people in poverty. "There's gotta be an invisible wall someplace," he thought. "Let's find the wall."

Today on the show: How de Soto found the invisible wall that was trapping people in poverty. How it transformed poor countries around the world. And how his discovery almost got him killed."

http://www.npr.org/blogs/money/2015/01/28/381652827/episode-599-the-invisible-wall

This helps explain the world and how it works and why.