Communication that does not advance its cause or produce a desired result is just self-indulgent talk, reflecting no more than people’s love of their own voice and of playing the role of the moral crusader. The effective truth of what they have written or said is that nothing has been changed. The ability to reach people and alter their opinions is a serious affair, as serious and strategic as war. You must be harsher on yourself and on others: failure to communicate is the fault not of the dull-witted audience but of the unstrategic communicator.