Sugya: נראה בפנים ואינו נראה מבחוץ and נראה מבחוץ ואינו נראה מבפנים
Very quickly review גמרא דף ט: “ולרבי שמעון בן גמליאל (sixth line from top of the Amud) until ור’ יוחנן (eighteen lines from the top of the Amud)
Review תוס’ דף ט: “ולרשב”ג
Tosfos asks on Rashi how could the protruding Lechi permit people to carry opposite the Lechi? This area is Reshus Harabim?
Question on Tosfos:
It seems that Tosfos understands why the Lechi permits one to carry inside the Mavui. This seems to be contradictory to the Gemara on bottom of דף ח עמוד ב which says a Korah placed outside the walls of a Mavui is invalid. So how could a Lechi placed outside the Mavui permit one to carry inside the Mavui?
Learn מהרש”א
https://hebrewbooks.org/pdfpager.aspx?req=14312&st=&pgnum=265
What is the explanation of the מהרש”א?
Learn חזון איש מועד ס’ ס”ז אות י”ז
https://hebrewbooks.org/pdfpager.aspx?req=14336&st=&pgnum=212
https://hebrewbooks.org/pdfpager.aspx?req=14336&st=&pgnum=213
Major Question:
According to the opinion לחי משום מחיצה and חודו חיצון סותם (we consider the outer face plate of the Lechi as closing the area). How could the Lechi partially protruding outside the Mavui permit one to carry in the Mavui as there is no wall opposite the Lechi for the Lechi to connect to?
See ב’ גר”א או”ח ס’ שס”ג סע’ יג
https://hebrewbooks.org/pdfpager.aspx?req=14325&st=&pgnum=232
Continue learning the גמרא דף ט: “ור’ יוחנן (eighteen lines from the top of the Amud) until “ולימא ” (last line – bottom of the Amud)
Major Question:
How could a Lechi be created through Lavud when there is no post that is noticable?
Learn תוס’ “כותל
Clarify what the case of נראה בפנים ואינו נראה מבחוץ and נראה מבחוץ ואינו נראה מבפנים looks like.