Two men fall into a well.
The first man is panicked and screams “We are doomed! We are going to die down here!”
The second asks ,”How so?”
“We fell 150 feet straight down. The walls are shear, with nothing to hold onto and climb. No one knows where we are, and there is no one within 10 miles of this location to find us!”
“Don’t worry, I am an economist” says the second. “All I have to do is assume a ladder”