1) Accept claims hat are supported independently by reliable authorities, evidence, or claims that you know to be true
2) Accept claims that are adequately supported by the source itself through citations to other credible sources (experts, research, reports, etc.) or through references to supporting facts
3) Reject claims when there is good reason for believing them false
4) Suspend judgment on claims that you are unsure of, for it is unreasonable to accept a claim without good reasons, and the only cure for uncertainty about a source’s claims is further research ad reflection