Primer on critical thinking

Critically Evaluating the Logic and Validity of Information

Many articles and essays are not written to present information clearly and directly; instead they may be written to persuade you to accept a particular viewpoint, to offer an, opinion, to argue for one side of a controversial issue. Consequently, one must recognize and separate factual information from subjective content.
Subjective content is any material that involves judgment, feeling, opinion, intuition, or emotion rather than factual information. Recognizing and evaluating subjective content involves distinguishing between facts and opinions, identifying generalizations, evaluating viewpoints, understanding theories and hypotheses, weighing data and evidence, and being alert to bias.


Check out the link. This is great stuff.