全書分為兩部分，第一部分為邏輯性寫作，第二部分為邏輯性思考。這篇文章主要總結金字塔原理在寫作方面的運用。
Key words:?structure, logic relationships among ideas, the rule of three
Why a pyramid principle？
讀者擁有有限的精力，把你的觀點結構化（from the top down）可以節(jié)省讀者的精力，由此更生動、更深刻的傳遞你的觀點。?
反之，如果你一開始就給出一大堆散亂的觀點，讀者可能會花更多時間去猜測 --- 你這么說的意圖是什么？你究竟想表達什么？
Three rules of grouping your ideas into pyramid form:
1） ideas at any level in the pyramid must always be summarizes of the ideas grouped blow them (think from the bottom up, order from the top down). 金字塔上層的觀點是下層觀點的總結，其主要論點和論據(jù)存在縱向關系
Just like the start point (statement) of a paragraph is a summary of the main ideas of the following sentences. Start with a question/answer, then all documents should reflect the question/answer.?[The vertical relationship between points and sub-points.]
2) ideas in each grouping must always be the same kind of idea. 歸納各個相似的觀點
e.g. apple and pear --- fruits.?[The horizontal relationship within a set of sub-points.]?
2.1 As for deductive writing 演繹法, you must have an argument in which second point comments on the subject or predicate of the first, and the third points draws a 'therefore' from the previous two.
2.2 As for inductive writing 歸納法, your ideas in the grouping must be logically alike.
3) ideas in each grouping must always be logically ordered. 觀點需要按照邏輯順序排列。你所提出的問題需要與讀者相關，是讀者感興趣的，或者是讀者不知道但想要知道的（already in readers‘ mind）。
e.g.: major/minor premise, conclusion; first, second, third; first most important, second most important, etc.. [The narrative flow of the introduction.]
How to build a pyramid structure?
The top-down approach: 1. Identify subject, draw a box on the top of your pyramid; 2.?Decide the question; 3. Write down the answer; 4. Identify situation; 5. Develop the complication, so what? what happened in the situation to trigger the question? alternatives: is it wrong/changed/different? 6. Recheck the question and answer. 如果發(fā)現(xiàn)論證下來你的原始Answer是不準確的，可以修改它。
The bottom-up approach:?1. List all the points 2. Identify the relationships between them and 3. Draw a conclusion.
Tips for introduction:?
1. introductions are meant to remind rather than to inform; 2. "Situation, Complication and Solution" are three indispensable elements of a story.
Deductive and Inductive Reasoning：
To highlight the structure, you can?
1. Use headings;
2. Underlined points;
3. Decimal numbering, bullet points;
4. Indented display. highlight the overall idea then followed by supporting points.
