The Physics of Finance: A new take on causality

Very relevant in science research today where non-linearity is finally accepted as the 'norm'!

http://physicsoffinance.blogspot.co.uk/2012/12/a-new-take-on-causality.html

Use It or Lose It: The Principles of Brain Plasticity

http://articles.mercola.com/sites/articles/archive/2012/12/09/brain-plasticity.aspx?e_cid=20121209_SNL_Art_1