I live my life according to the history of things as they are. If it’s a lie, then it’s a lie and there’s no point in doing something that isn’t true. But if something is true, then we have to aggressively protect it. Other wise we could end up with children believing apples taste like pears, Jesus has green skin color and Alexander the Great never left Macedon. Reason supports faith. Ergo, we have to reasonably come to the conclusions of faith based on reason. Unless it becomes reasonable to believe that faith itself is not reasonable; but that would mean that it’s not the truth. Reason is always motivated by truth and when it’s not, then it’s being unreasonable. So it is imperative to know what’s what; and why things are how they are.
How can you say what difference does it make? I couldn’t imagine living a life doing something and not knowing why I’m doing it; other than the answer being “it’s just faith.” We ask questions, that’s why it’s important to know. And judging by how…hostile people get when questions are asked, it seems like there’s more than just ‘faith’ motivating people. Just now I went to look at the Catholic Answers article on the rosary and it’s not even there. The link set up by one of the apologists is missing. I find it very curious.
You are rather quick to use the word “lie”. Lying is a an intentional misstatement of the truth. The book you cited is written by a retired English physician. The other source was written by a priest. There is no showing that I can find as to which of them is better trained in historical research, nor necessarily a showing of what documents they investigated in their research.
Anyone who has been through college and taken history courses, if they were paying any attention, would know that history - whether it is recent history or old - is subject to a number of issues.
The first is the issue of the availability of documents. When researching matters which are centuries old, the availability of documentation is not the same for all researchers; documents available to one may not have even have been known to another researcher. So accusing one researcher of a lie is a bit over the top; they simply reported on what they found.
The second issue in research is the weight and importance given to the documents found. Two researchers, both accessing the same documents, can come to honest disagreement over the information; in all historical research there is a necessity of selecting what statements and facts are going to be reported and with what emphasis. Neither is lying; both have opinions on the merits of the statements and alleged facts in the documents. The fact that they reach different conclusions doe snot mean in the least that they lied; it only means that from documents which they accessed, they reached different conclusions.
And often the documents themselves are problematic; it is the folly of freshmen to presume that one writing in say 1200 or 1600 would report matters in the same way that someone does in 2000. Too often statement which appear to be factual are simply statements of opinions and not actual facts.
I am not going to buy the doctor’s book, as his writing about the origins of the Rosary are totally irrelevant to me. I say the Rosary because I choose to use that form of prayer at times; I choose to say the Liturgy of the Hours because I choose to pray in that format at times. The history of either form of prayer is absolutely irrelevant to me in terms of praying them.
That does not mean that intellectual curiosity about either is wrong; but intellectual curiosity about them should be just that - curiosity. The choice between the two should not be based on ancient history of either; but rather on a prayer format which is most fitting to your spiritual life. I seriously doubt God is going to give a fig about the history of either format, should you pray using one or the other; He is going to be far more concerned that you pray them from the heart.
And calling one author a liar, or seeking to show that one lied and the other didn’t, not only is a misstatement as to what actually constitutes a lie, but is also soundly lacking in any understanding of historical research. Further, it has no rational foundation as to the use of either prayer format, as both are approved by the Church - and one of them can be an official liturgical function, and the other one will not. If one of the researchers reaches one conclusion, and another reaches a different one, what difference does that make in choosing a prayer format? Logically, absolutely none. You don’t choose to say the Rosary because one person stated it was popular in the 1200s, or because another one said it became popular in the 1600s. You choose it because it fits your spirituality.