Tham khảo tài liệu 'mastering the craft of science writing part 15', ngoại ngữ, kỹ năng viết tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Ideas into Words Same idea as on page 2 probably drop back a few paragraphs to complete some earlier train of thought A that got interrupted. But occasionally B works better where it is. After all you had some reason for putting it there maybe a compelling reason. If so try hinting at B back at A. Little-did-he-know is too crude but has couth cousins. Sometimes it is enough merely to acknowledge the original puzzle . for reasons that would remain unknown for 20 years . Once the reader knows that A s loose end will be picked up later he can relax. He might even be spurred on by curiosity as to how this little subpuzzle turns out. Do something intelligent whatever will work best for the particular story What matters is that the reader should always feel sure that any loose ends will be tied up in good time that he is in competent hands. Take a look. Is it the same idea If not rework both passages into clarity. If yes you have a structural problem. Repetition is always the flag of a structural problem the question being why you felt any need to repeat the point. Your subconscious is your friend and your subconscious made you do that. Why Several possibilities Maybe your subconscious knew that the idea call it C was weak the first time round so that the reader will have forgotten. Strengthen the original C 120 Feels jerky. Snickered. till it s unforgettable. Then you can merely refer to it with no need for a full repetition. Or perhaps part of your second C variant belongs back with the original C dropping the repetition. Or perhaps the second reference needs to be stronger. You might forthrightly remind the reader of important point C mentioned in the opener and now revealed in a new aspect. Or perhaps the full discussion all of it belongs at the second location. If you remove C from its first location does it leave a gap Will the logic still track Hmm. No gap no problem. You can move it. These strategies are partly a matter of personal style. I like to braid ideas