Cue words which indicate that the author is about to present a piece of evidence.
Ways in which we can test the quality of evidence
Authority (quality of evidence)
when people have special training, professional credentials, or considerable experience in a particular area. We call them authorities.
When writers cite business scholars and experienced business people, this lends authority to their arguments.
Fallacy of False Appeal to Authority
when we accept the testimony of someone who has no expertise in the relevant area