Reply To: Chasimas Hatalmud: How did it come about?

Before Rebbi, Torah Shebaal Peh was passed on orally. When Rebbi saw that it will be forgotten, he allowed to write down what was necessary for understanding. As the generations became weaker more and more had to be written down. I heard from my rebbi, that we have no seforim from Rav Nasson Adler ztz’l the Chasam Sofer’s rebbi, as he had a photographic memory and believed that for him it is forbidden to write it down as a dot placed in the margin of the gemora was enough.