Is Economics an intelligent theory?

In the article The Economist has no Clothes in Scientific American Robert Nadeau uncovers the roots of “modern” economic theory in old formulas from physics that has long since been proven wrong in physics.
In addition the economists replaced physical units with economical in a strange way that has never been shown to be correct.
I studied [...]

IQ test taking and other ways to keep the gray cells in shape

The brain is a muscle. As all muscles it needs training to keep in shape.
Personally I see the type of tasks you solve in an IQ test as one type of training, mainly for logical thinking.
Solving puzzles of different types trains other parts of the brain. Anything you are not already familiar with will start [...]