As for this, by sticking to one point in each paragraph, you will help to establish a clearer thought presented by the paragraph. There is a reason why paragraphs are separated from each other and the reason for that would be to separate and avoid the mixing of ideas. This would facilitate the thoughts and ideas in the document or writing material and make the paragraphs more understandable. When sticking to one point, the reader will have the apprehension that the whole paragraph is for them to understand just this point. When proceeding to the next paragraph, they will be prepared to take in another point and connect it to the ones they have just read and understood.