Sometimes I leave a comment like "Stack Overflow is not your personal research assistant," but am accused of being rude.  How can I craft a comment that is seen as civil to the community and instructive to the OP?


What tone should I strike in comments?
What are some examples of bad comments and their better replacements?



Question: What was the meaning of the tunnel scene?
Answer: I think that the Paul became engulfed because he imagined himself being tricked by the "Shadows".In other words he loses inside his mind.