In a book one gets led from step to step. Software jumps to conclusions. Books are clumsy at making decisions. Software makes the process look deceptively easy. It is easier to know the credibility of a book.
Books concentrate more on the content.
In reality the answer is much more likely to be a common cold. If a clinician gives the impression they do not know about the information the patient may assume the clinician is trying to hide their ignorance, and therefore believe the information rather than the clinician. Understanding the sources which patients may have tapped. Having a view of the credibility, truthfulness, problems and effects of each type of data source. This may give them the ability to handle presentation of unknown data without appearing ignorant.