I think you're over-educated if you don't use the knowledge you've gained for a worthwhile purpose. Most of the 'well' educated people I know don't seem to lord their knowledge over anyone though. In fact, many are highly qualified in their field and yet you'd have a perfectly good time with them down at the local pub on a sunday arvo - which is my definition of a 'good bloke/chick', meaning that they're still down to earth enough to enjoy the simple things and to use their knowledge for good and not evil.
I'd probably have to consider myself over-educated for the job I currently have. I probably didn't need 3 1/2 years at uni to be a full time mum and wife.
It did broaden my horizons though, and I have a different perspective on things now, but that could just be because I'm older too. It's hard to know in retrospect because you simply can't do the experiment.
Some people who have a high degree of education can be a pain in the arse to be around though, so I can certainly understand any social commentator saying so. Why are they so annoying though? I think mostly because they have a need to make sure everyone around them knows they're the 'smartest' so they're always blowing hard. What would I know though. I'm still an undergraduate.
