If the writer’s opinions are not objective, the source:
 has authority 
is not accurate
 is biased 
lacks currency

Verified Answer :

If the writer’s opinion is not objective, it mostly means
that the source is biased. Objectivity is very important aspect of any writing.
If the readers perceive that the writer is being biased, they probably will
undergo selective perception and chose one thing from the piece and omit the
other. It is very important that the writer writes in a way that the reader
goes through the entire piece and retains as much about the piece as possible. It
can only be done by writing objectively.