While the stages illustrated in the rim of the "policy wheel"move forward logically from diagnosis through to evaluationin an apparently linear fashion, it is important to note thefunction of the arrows moving from the stages to the hub.These are bi-directional because policy champions not onlymanage the inputs and outputs of each stage but they alsoreact to feedback from various stakeholders that occurs ateach stage; feedback which is used to adjust design, analysis,timing, dialogue and information flows throughout thepolicy process.