Eiruvin 94a, b

We begin with a story about Rav and Shmuel.  They are sitting in a courtyard on Shabbat when the wall between two courtyards falls.  Shmuel tells residents to hang a cloak at the edges to secure the partition.  Rav turns his face away, demonstrating his displeasure/disagreement with Shmuel's ruling without countering the Sage in 'Shmuel's place' (where Shmuel holds authority).  Shmuel then jokes, suggesting that Rav use his belt to secure the cloak if he is unhappy with the cloak being placed there.  

Shmuel ruled earlier that a partition need not be repaired in such circumstances as the principal of lavud, connecting, and the principal of "carrying to the base of the partition", mtaltel ad ikir mchitza.  The Gemara suggests that Shmuel asked to have the cloak placed because of privacy concerns alone.  If the partition was in place before the start of Shabbat, Shmuel believes that carrying can continue throughout that Shabbat. Thus it was permitted to carry and place or "build" with the cloak after the partition had fallen during Shabbat.  The rabbis pick up on this  issue in a mishna at the end of 94a.

A new mishna is introduced regarding a courtyard that is breached into the public domain.  The rabbis discuss whether the resulting area is a karmelit or a public doman, each with its own implications regarding carrying.  As stated earlier, another mishna suggests that breaches in sides and partitions post/beam placement affect future Shabbatot.  They raise a challenging question.  According with a tradition connected with chazakah, we are obligated to continue a practice, a tradition, a rule once it has been established.  Thus we will have established a new tradition regarding carrying on Shabbat when we allow carrying to continue though the partition is unfit.  Will this carry over into future Shabbatot?

Daf b focuses on the notion of "carrying to the base of the partition", m'taltel ad ikir mechitza.  The rabbis look at homes where walls are breached in different ways, each posing a difficulty regarding boundaries between the private and other domains.  They look at the types of breaches and the types of roofs that might or might not allow for "carrying to the base of the partition" (where the roof can be imagined to extend down to the ground from the edges to the ground, essentially correcting the breach).

More interesting to me than these technical conversations was the story regarding Rav and Shmuel at the start of today's daf.  It seems that these two Sages disagreed on a number of issues.  Yet we learn that they are sitting together, assumedly enjoying their Shabbat menucha, on their one day "off".  I wonder whether we may have lost the ability to sit together and disagree - respectfully - as a pursuit of leisure.  I hope to understand more about the relationships between these and other personalities as I continue to learn.