How can you cure a sickness when you donÂ’t know its cause? Many of todayÂ’s corporations are exhibiting the disturbing symptoms of a hard-to-define illness. You see signs of the malady in numerous ways: irrational decision-making, massive downsizings, excessive executive pay, low morale, and a sense of isolation among employees. At some companies thereÂ’s an even odder symptom: workah…