Actually the Keynsian model is rather complex. If you want simplistic, look no further than the Laffer Curve. Remember: If your pholosophy can fit on a bumper sticker, it probably belongs there.
I don’t know what Scientific Method you were taught, but Evolutionary Theory fits in well with what I was taught in my research methods courses and science classes. But then, most scientists have moved past Baconian theory (largely due to the need to account for behavior that is not visible.)
OK, how about this: People who listen to Rush, Sean, et al; lack the ability to entertain themselves by reading anything more serious than a comic book. Since they are unable to entertain themselves, they turn to radio. Those who would be prone to listen to Air America have retained the ability to read and thus don’t really need to listen to talk radio.
Except government workers in most states haven’t gotten a raise in years and still make less than 70% of the private sector.