Investing for Survival--Should you have all your eggs in one basket?

Investing for Survival

            Should you have all your money in one brokerage account (medium):

            http://online.wsj.com/article/SB10001424127887324747104579025130705189904.html

            On the virtues of saving money (medium):

            http://www.zerohedge.com/news/2013-10-07/guest-post-saving-money-bad-economy