I’m going to do some posts on causality and correlation—undoubtedly fewer than I originally planned because I realized soon enough that struggling with a philosophical concept that has stymied the best minds for centuries and writing a trading/investing blog are not really compatible enterprises. Prefatory to this ill-conceived yet even in its truncated form perhaps enlightening venture, let me suggest that you “taste-test” Proofiness: The Dark Arts of Mathematical Deception by Charles Seife (Viking, 2010). Here are some links that provide interviews with the author and/or tidbits from the book.
"Lies, Damned Lies, and ‘Proofiness’"
"Fibbing with Numbers"
"The Dark Art of Statistical Deception"