A guess is an estimation, a commitment to an assumption. That's what planning is, no matter how we treat plans as more than guesses. We work from strategic, operational and project guesses all the time. When our guesses work, it's usually because we stay question-focused along the way. Learning creates agile guessing, the most productive form of guessing possible. Next time someone suggests the need for a plan, use guessing as more accurate and realistic language.