Use the formula P=40 to 70, in which P stands for the probability of success and the numbers indicate the percentage of information acquired. Once the information is in the 40 to 70 range, go with your gut.
Colin PowellIf it ain't broke, don't fix it' is the slogan of the complacent, the arrogant or the scared. It's an excuse for inaction, a call to non-arms.
Colin PowellI served 40 years in government, and I'm not looking forward to a position or an assignment. Of course, I have always said if a president asks you to do something, you have to consider it. But I am in no way interested in returning to government. But I, of course, would sit and talk to any president who wishes to talk to me.
Colin Powell