As people rise in an organization, their audiences for both speaking and writing tend to grow and their ideas will impact more people. They will also be dealing with more complex problems involving dissimilar parts. Even for lower level jobs, communication is necessary up and down the chain of responsibility. To communicate effectively, it is important to understand the purpose, audience, and context of any message to know if the words will work for that situation. Proper communication following the P.A.I.B.O.C. structure is important because communication is expensive.