The more data you have, the easier it is to see critical levels.
The 200 years of data below removes any doubt which levels are most critical should a 2008 crisis ever occur again (in 2014 just saying!).
The close up of the chart below.
The long view.
"I believe that uncontrolled basic emotions are the true and deadly enemy of the speculator. That hope, fear, and greed is always present, these emotions sit on the edge of the psyche, waiting on the sidelines, waiting to jump into the action." ~ Jesse Livermore
"The key to making money in stocks is not to get scared out of them" ~ Peter Lynch