Yesterday we discussed two answers to the following major question:
The gemara asks a question on the Rabanan how could they allow a לחי וקורה on one side and צוה”פ on the other when Yerushalayim needed it’s gates closed in order to prevent it from being a Reshus Harabim.
How could the gemara challenge the Rabanan’s opinion from the opinion of Rebbe Yochanan when it’s clear from דף כב that they disagree on when we say אתי רבים ומבטלי מחיצות?
Tosfos “תוס’ דף ו:” והאמר (from וא”ת) – From Rebbe Yochanan opinion of when we say אתי רבים ומבטלי מחיצות with only four partial walls we can learn that the Rabanan should also say אתי רבים ומבטלי מחיצות when there are just two complete walls.
Ritva דף כב. “כאן הודיעך – The Gemara is ruling like Rebbe Yochanan when we say אתי רבים ומבטלי מחיצות but rules like the Rabanan in regards to the minimum amount of walls needed to create a Reshus Hayachid.
Major Question:
Why should Yerushalayim need doors closed at night;Yerushalayim had four walls so according to Rabanan we should not say אתי רבים ומבטלי מחיצות and since it had two whole side walls we should not say אתי רבים ומבטלי מחיצות even according to Rebbe Yochanan?
Learn תוס’ דף כב. “חייבין
Learn ריטב”א דף כב. “כאן הודיעך for an answer
https://hebrewbooks.org/pdfpager.aspx?req=37287&st=&pgnum=34
Questions:
Does אתי רבים ומבטלי מחיצות break all the walls or just the ones the public are passing through?
When the public walks through mechitzos does it break the entire wall on that side or just the area the people are walking through?
Bring a proof from the above Ritva
Is it possible to transform a town square into a reshus hayachid?
Learn the בעל המאור and מלחמת ה’ on the ריף on the גמרא דף כב who discusses all the points above
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=336