Each of these parts is important because of its potential to reach a different group of readers. Each should be written clearly and concisely. It is common practice in NASA reports to end the main text with a concluding section. In spite of skillful writing the reader may become confused or overwhelmed by the large number of details in a complicated report. Clearly the writer needs to bring out the most important facts and discuss their significance.
Many busy people read the concluding section of a report first.
On the strength of this reading they may become interested in the details, or they may discard the entire report. Therefore, the concluding section must be self-contained and independent of the main body of the report. Preferably it should be so worded that a person not completely familiar with that particular branch of science can understand what was learned from the investigation. These headings connote somewhat different contents distinguished by the degree of generality and certainty of the material included in them. Since statements made in this section are often quoted by other investigators, each statement should be critically evaluated for accuracy and clarity.