From historical process to modern, from sheep to cow.
In this video I forgot to mention the most important thing: the use of bovine guts permitted to avoid a big part of the process, saving days of work and dozens of workers, and, last but not least, working with a standardized material, always same size.
If today a company is using sheep and is using historical process, that means all the previous steps I mentioned, employing all that people (at least 20) to keep the timing (to prevent the guts to decompose), and making something like 500 Strings per week (which, today, are not enough to pay for 20 people)