In our minor looking at Ideas of Economics we discovered how somebody can be not very good at something but still good for themselves and everyone else if they specialise in it.  Sharing out our strengths can help to produce more wealth for everyone by the truth of 'comparative advantage.'  The students tried this out in a simulation, which managed to reflect real life nicely.  (Except that the tutor took it all back at the end of the session.  Oh, wait--perhaps he reflects the government.)