Yes, there is a dual use, keeping information a trade secret, as well as good communication across legal or medical fraternities. The trade and craft secrecy wa

Yes, there is a dual use, keeping information a trade secret, as well as good communication across legal or medical fraternities. The trade and craft secrecy was mainly to mulct clients and restrict trade competition. https://www.google.ca/search?q=mediaeval+trade+monopolies&oq=mediaeval+trade+monopolies&aqs=chrome..69i57.15053j0j8&sourceid=chrome&ie=UTF-8 https://www.google.ca/search?q=mediaeval+trade+monopolies&oq...