"You can't manage what you can't measure." Measurement is very important to management control. It lets managers know whether or not plans have been met. If plans aren't met, adjustments must be made. The board of J.C. Penny let CEO Ron Johnson go last week. Johnson had been very successful at Target and Apple before joining J.C. Penney. Retail analyst Robin Lewis blogged his "continuing and steadfast belief in Ron Johnson's ultimate vision for J.C. Penney's: that of a transformed, uniquely-compelling shopping experience, appealing to a more contemporary-minded consumer who would form a new customer base, perhaps a smaller, yet more productive business, but nevertheless poised for growth vs. maturity." Yet, let's look at some measurements during Johnson's employment at J. C. Penney. Revenue declined by $4 billion. Graphic from http://ycharts.com/analysis/story/apple_guy_cries_uncle_in_facesaving_language Same store sales fell 32 percent. Graphic from http://seekingalpha.com/article/1279621-will-institutional-support-for-j-c-penney-vanish The stock price lost half its value . Graphic from http://www.businessweek.com/articles/2013-04-11/j-dot-c-dot-penney-rehires-myron-ullman-to-clean-up-ron-johnsons-mess More than 20,000 employees were laid off. Graphic from http://online.wsj.com/article/SB10001424127887324345804578423081955213990.html By any measure, J.C. Penney has had one of the worst performances by a major retailer. Now, Robin Lewis says that Ron Johnson's performance as CEO of J. C. Penney was "the most colossal, dramatic, tragic, transparent, rapid and microscopically tracked meltdown in the history of retailing." Have any executives failed as badly as Ron Johnson? Did the board move too soon or too late? Will J. C. Penny come back?