We are apt to speak of the sorrows of childhood as trifles in comparison with those of grown-up people; but we may depend upon it the young folks don't agree with us. which best explains how knowing the definition of trifles is useful in understanding the passage?

- "the basic difference between keywords and subjects is that subjects (or "subject headings") have been predetermined, while keywords have not. a keyword is an easy place to start because you can use any word that seems to fit your search; this is called "natural language" searching."

what are you asking i dodnt know