It would be dead against all policemanly etiquette.

War being decided, through his advice it was planned to begin by the siege of Siang yang on the northern bank of the Han; the possession of this city would facilitate the conquest of the great Yang tse region.]

Roese also says counterfactuals can serve emotional purposes. You can think about how things could have been worse, and so feel better about yourself, and grateful for where you are.

It seems that in the autumn of 803 he went on leave. His uncle Po Chi-chên, had recently been moved from his post at Hsü-chou and promoted to be Prefect of Hsü-chʻang in Central Honan.