Here is a good article explaining the mindset of economists/analysts/politicians types - looking for theory to that can explain all of human behaviour, and extrapolating data to suit their opinions, knowledge and mindset.
I mean most of the guru economist types on TV probably don't understand the how the computer at the there desk works - never mind being able put every possible piece of information together to predict the future, and understand their entire economy. Is it likely that someone use struggles with a simple task - is able to understand everything. If you really too an economist and asked them explain the details of one particular
Why Economists Missed the Crises | The Big Picture
Has vagueness, and talking in the overview - become the norm in our society - we also have a corporate management culture where sitting at your desk all day in the norm, and getting out and seeing what is really happening is shunned upon.
There is a lack of people who really research things properly, or have a finger tip feel - instead we jump to easy answers.