The Value of a Plan

“When we “plan”, we expect the actual project result to conform to that plan, and then deviations become team mistakes or sign of the team’s failure to work enough. When we “speculate”, we take the opposite perspective – it’s the plan we suspect was wrong. The plan, or speculation, is a piece of information, but it is only one piece that we will examine to determine our course of action in the next iteration.”

Reference: “Agile Project Management”, Jim Highsmith, Addison-Wesley, Second Edition