1. fear of going hungry
2. being coerced to do something they don't want to
and then abruptly having %age of both drop exponentially over the last century...
* A clear (usually expensive) desire for a thing ("I want a motorcycle") that when fulfilled doesn't change ones state of mind
* A vague sense of dissatisfaction addressed ineffectively by impulsive, random actions
* Get me this motorcycle
* Do something to make me feel better
Systematically helping clarify desires and expectations between people is a critical aspect of scaling organizations for exactly this reason.