See: how many schisms and papal crises there were in medieval times (admittedly, the Catholic Church was also much more a political-nation-religious entity then vs now)
Using thousands of monks to copy documents by hand instead of using printers was incredibly resource expensive, but affordable for the Medieval Church.
And I mean fully-loaded, so how much time needed to be spent {farming/military/political administration} to give a monk time to learn to read and write, and then allow them time to copy the book itself.
Price of 7 books = £5 = 100s -> 14s per book / Price of 1 Pig in London = 3s
14 / 5 => roughly 5 pigs per book
Note £1 = 20s
I was observing that the modern Catholic Church (post-printed word) has offified in exactly that way, with the printed word allow direct dissemination of the "agreed" canon (i.e. pope / hierarchy) to the entire church, thereby unifying them into a single practice.
In counterpoint I offered the number of papal crises and schisms that abounded during the medieval and pre-medieval period (i.e. before printed material became cheap and available).
Ergo, the use of the printed word allowed the Catholic Church to unify and standardize in a way it had not before -- GP's point.
It's indicative that the majority of monotheistic religious splits within Catholicism happened before the printing press, when intervening human parties could reinterprete the canon as it flowed through them.
For political-national-religious entity, the Catholic Church / Holy Roman Empire partnership allowed the Church to become a nation in all but land, by the power its blessing conveyed upon a chosen leader.
Would it? The Bible, which is much larger, was practical to standardize and disseminate without the printed word, and its not like there was a proximate relationship between the availability of printing (presumably with movable type, in the 15th century) and the codification of canon law in the 20th. The idea that this was waiting on printing is…hard to defend.
> See: how many schisms and papal crises there were in medieval times
The really durable schisms after the 11th Century emerged after or just before (and became crystallized because of) printing, though.
IIRC this was their main contention against the Protestant reformation. They believed that just pointing at scripture without some practice of custom and tradition to ensure you're properly interpreting it in a sensible way would lead people to folly and extremism/fundamentalism.
Granted it's sort of a pick your poison deal. You either get the fundamentalism of hardline scripturalists or you get the corruption that comes with a hierarchical institution that requires people to offloading some of their critical thinking. Or you can blend them together and get the worst of both worlds by creating something that looks like the more noxious elements of the American Evangelical movement.
I don't think it is fair to say the latter leads to "corruption" or "offloading some of their critical thinking". This phobia is largely a feature of radical individualism and the lack of humility that the notion of radical self-sufficiency (intellectual or otherwise) entails. The paradox of individualism is that it actually weakens the ability to be an individual. Human beings are social animals whose lives are relatively short and therefore whose experiences are limited. And because individualism atomizes the individual, the effect is that this social animal becomes subject to greater levels of fear and stress about his isolation, and when isolated from the social and from tradition, he becomes easy prey for weird ideologies.
In this specific case, scriptural canon was compiled by the Catholic Church. You obviously cannot appeal to the canon to codify the canon, so some extra-biblical body of knowledge and understanding must exist that would allow such a canonical body of scripture to be identified. This body of knowledge and understanding is called Tradition, and it is guarded, refined, and transmitted by an unbroken chain of authority found in the apostolic succession. (Tradition is the basis for the transmission and development of all knowledge in human history; there is likewise a scientific tradition without which there could be no science.) The notion that an individual could do better alone without relying or drawing on tradition is belied by the presence of over 40,000 Protestant sects in the US alone, each claiming to be able to interpret scripture. And how do they interpret scripture? However they want! In most cases, it means interpreting it according to whatever happens to be fashionable at the time. So much for "critical thinking". This is very visible in the mainline Protestant churches that, not so incidentally, are shrinking very rapidly. Where this Protestant mindset has leeched into Catholic circles, it has produced the same deadly effect.
The Catholic Church is interesting counterpoint. Their religious teaching still openly draws upon tradition, institutional church authority and individuals like the Pope.