Once you have examined the types of evidence the author has provided and considered how valuable the evidence is in supporting the author's claims, notice whether the author has considered other possible explanations. If the author considers only one explanation for the evidence, he or she may be presenting a biased, or one—sided, view or may not have fully considered the issue. Does it seem to you that Harry Price has seriously considered any explanation for the strange goings—on at Borley Rectory besides ghosts"