Once an idea has been sown it is difficult to remove it from a patient's mind. Unfortunately, there is a tendency to believe computers. As the software can make assumptions it may not be so obvious what information it is basing its assumptions on. Books are more transparent. 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.