Truck and Barter

Surveys in general suffer from the fact that self-reported data is always seriously problematic. And that's even when asked questions with demonstrably true or false answers, such as "What is your income?" But couple surveys with the fuzzy-edged notion of "satisfaction" or "happiness", and you get this (with the added bonus of a small sample size):

South Korean gangsters get more satisfaction from their line of work than the police, according to a survey published on Tuesday in local dailies.

The article even suggests satisfaction is correlated with income (gangsters make more than the police, natch), which isn't what other places are telling us.

For more on the topic, see Wilkinson.