Is there material that does not contribute to one of the elements listed above?
Skimming involves reading the abstract, and looking at the figures and figure captions.
This section should be rich in references to similar work and background needed to interpret results.
However, interpretation/discussion section(s) are often too long and verbose.
You should then go on to explain why more work was necessary (your work, of course.) Quarantine your observations from your interpretations.
The writer must make it crystal clear to the reader which statements are observation and which are interpretation.