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1)

(a) Assuming that the threshold referred to by the Tana of our Mishnah (where he permits rolling from the Reshus ha'Rabim) is that of a Reshus ha'Yachid, the author of the Mishnah must be Rebbi Shimon.
What does Rebbi Shimon say?

(b) What is strange about the continuation of the Mishnah, where Rebbi Yehudah only permits retrieving the scroll as long as it has *not* landed on the ground, and Rebbi Shimon permits it even if it *has*?

(c) Rav Yehudah accepts this situation, establishing the Mishnah by the threshold of a Reshus ha'Rabim (and according to Rebbi Shimon), as we explained it.
How does Rabah establish the Mishnah (even according to Rebbi Yehudah)?

(d) Abaye queries this from the Beraisa "Toch Arba Amos, Golelo Etzlo, Chutz le'Arba Hofcho Al ha'K'sav".
What is his Kashya from there?

(a) Abaye establishes the Mishnah by the threshold of a Karmelis.
How does he then explain the last-mentioned Beraisa?

(b) What is the problem with this answer (seeing as the author is Rebbi Yehudah, who in principle *does* decree by Kisvei Kodesh)?

(c) How will establishing the Mishnah by a long threshold, solve this problem?

(d) What is the alternative answer - even if we are not talking about a long threshold?

(a) Why are we still not afraid that he may carry the scroll directly from the Reshus ha'Rabim straight through the Karmelis to the Reshus ha'Yachid without stopping?

(b) And why are we not afraid that, even according to Ben Azai, he may *throw* the Sefer from the Reshus ha'Rabim to the Reshus ha'Yachid?

(c) How should a Sofer leave Kisvei Kodesh, Tefilin and Mezuzos when he finishes the day's work, and how should he *not* leave them?

(d) In that case, how can the Mishnah permit turning the Sefer on its face (if it landed within ten Tefachim of the Reshus ha'Rabim)?

(a) If the Sefer stops within ten Tefachim of the ground, then, according to our Mishnah, it should be turned on its face.
Considering that it has not yet landed, why can he not just roll it back?

(b) Then how will we explain the Seifa 'Rebbi Yehudah Omer, Afilu Eino Mesulak min ha'Aretz Ela Me'lo ha'Chut, Golelo Etzlo'?

5)

(a) The Gemara initially learns that, according to the Tana Kama, if the Sefer is within three Tefachim of the ground, it is forbidden to roll it back - even though it has not landed on anything.
What does Rebbi Yehudah say in this case?

(b) What does Rava say with regard to an object that is within three Tefachim of the ground - according to the Rabbanan of Rebbi Akiva, who do not hold of 'Kelutah Ke'mi she'Hunchah Dami'?

(c) How does the Gemara explain our Mishnah in order to establish Rava even like the Tana Kama of our Mishnah?

(a) One may place things on a ledge in front of a window (which is above a Reshus ha'Rabim) and take them off.
What are the dimensions of the ledge?

(b) Why are we not afraid that the vessels may fall, and the owner will go and retrieve them?

(a) Why may one not use a ledge which is less than four Tefachim? Since when is one forbidden to use a Makom Petur?

(b) What does the Beraisa mean when it restricts the use of the top ledge, to the part which is in front of the window only? What size ledge are we talking about?

(c) What is the Chidush of the Beraisa in permitting the use of the bottom ledge (see Tosfos DH 'Tachton')?

(a) Is one permitted to stand in one of the major Reshuyos and carry in the other?

(b) What is the difference between this and standing in one of the major Reshuyos and urinating or spitting in the other, which is forbidden?

(c) What Chumra does Rebbi Yehudah add to the above prohibition of spitting?

(a) What does Rebbi Meir say with regard to standing in one Reshus and carrying in the other, and why is that?

(b) What caused Rav Chinena bar Shalmayah to think that the text in our Mishnah reads '*Lo* Ya'amod Adam' (like Rebbi Meir) instead of '*Ya'amod* Adam'?