Question

Regarding what the Rabbi wrote to me:
"First of all, many thanks for the comments.
1. Regarding 'the one who blew,' many have already noted this. Mondshine found its source in Sefer HaKaneh:
http://www.haoros.com/Archive/index.asp?kovetz=770&cat=7&haoro=0
2. The source from Berakhot 10 for eating before prayer is well known, but it is hard to see this as a real source. Simply put, this is merely an asmachta. But from Maimonides in the ninth root it appears that this is a full derivation, and it is a Torah-level prohibition.
3. And indeed, the words of the Meshekh Chokhmah on this are difficult and require examination.
4. Full repentance is indeed contrasted with repentance in one’s old age. Still, he begins with the definition of full repentance, and only afterward brings that there is incomplete repentance. Perhaps his intent is to define what I called the greater repentance. And if one does so in old age, there is no real revolution here, and it is not such a full repentance.
A peaceful Sabbath and a good year,"
 
I would like to ask a somewhat cheeky question…
Regarding your knowledge, and I’ll take the first question as an example — did you already know this discussion and the above article in advance, or did you check it after the question?
It just interests me how a person has accumulated so much knowledge (I used this as an example, but I see it throughout all the articles and the lesson).
 
Sorry in advance,
Thank you