Question mark
In the early 13th century, when the growth of communities of scholars (universities) in Paris and other major cities led to an expansion and streamlining of the book-production trade, punctuation was rationalized by assigning Alcuin's stroke-over-dot specifically to interrogatives; by this time the stroke was more sharply curved and can easily be recognized as the modern question mark.
Source criticism (biblical studies)
Source criticism is the search for the original sources which lie behind a given biblical text. It can be traced back to the 17th-century French priest Richard Simon, and its most influential product is Julius Wellhausen's "Prolegomena zur Geschichte Israels" (1878), whose "insight and clarity of expression have left their mark indelibly on modern biblical studies". An example of source criticism is the study of the Synoptic problem. Critics noticed that the three Synoptic Gospels, Matthew, Mark and Luke, were very similar, indeed, at times identical. The dominant theory to account for the duplication is called the two-source hypothesis. This suggests that Mark was the first gospel to be written, and that it was probably based on a combination of early oral and written material. Matthew and Luke were written at a later time, and relied primarily on two different sources: Mark and a written collection of Jesus's sayings, which has been given the name Q by scholars. This latter document has now been lost, but at least some of its material can be deduced indirectly, namely through the material that is common in Matthew and Luke but absent in Mark. In addition to Mark and Q, the writers of Matthew and Luke made some use of additional sources, which would account for the material that is unique to each of them.