Accuracy is essential because decisions will be made based on your summary by people who have not read the original.Executive summaries make a recommendation.Executive summaries are written literally for an executive who most likely DOES NOT have the time to read the original. It can be anywhere from 1-10 pages long, depending on the report's length.
The executive summary is usually no longer than 10% of the original document. Executive Summaries are much like any other summary in that their main goal is to provide a condensed version of the content of a longer report.