There is a joke/story that rabbis tell one another. A rabbi came to a congregation. Everything way lovely, but the congregation had a strange custom – as anyone approached the bima from the center aisle, the would duck their heads when they got about 8 feet from the ark. It was the strangest thing, but congregant after congregant did this. Not only that, they insisted that the rabbi do so as well. It’s to show respect! They insisted. It’s our way!
The rabbi went and searched all her books, her codes of law, and could see no reason why they had this custom. So, one day, she asked a founding member of the congregation what they were doing.
The congregant turns to her and says, “It all goes back to our first sanctuary. See, we had a low hanging chandelier that you had to duck under to get to the bima. Here we are, years later, after 2 renovations, and we still duck the chandelier.- even thought it’s no longer with us”
I was reminded of this as I read today’s daf. The rabbis draw a conclusion from an observation, only for us to learn later that they were looking at it all wrong. Here is what they see:
Ravin bar Rav Adda said that Rabbi Yitzḥak said: There was an incident involving a person from the valley of Beit Ḥortan who stuck four poles into the ground in the four corners of his field, and stretched a vine over them, creating the form of a doorway on each side. He intended to seal the area so that he would be permitted to plant a vineyard in close proximity without creating a forbidden mixture of diverse kinds in a vineyard. And the case came before the Sages, and they permitted him to consider it sealed with regard to diverse kinds.
The rabbis conclude from this, and then begin to teach, that a vine can make a doorway and that the reason this works as an eruv is because of the doorway. Then, a little further down the page we learn otherwise:
As Rabbi Yehoshua went to Rabbi Yoḥanan ben Nuri to study Torah, even though Rabbi Yehoshua himself was an expert in the halakhot of diverse kinds and found him sitting among the trees, and Rabbi Yehoshua stretched a vine from one tree to another and said to him: Rabbi, if there are grapevines here, in the enclosed area, what is the halakha with regard to sowing diverse kinds of seeds here, on the other side of the partition? Rabbi Yoḥanan ben Nuri said to him: In a case where the trees are only ten cubits apart, it is permitted; however, where they are more than ten cubits apart, it is prohibited.
So, we see that the permissibility of carrying had to do with the size of the area, not with the doorway. This teaches us that, like that rabbi, sometimes we should get behind the origins of why we do what we do. And, like Yehoshua, no matter how smart we think we are, be humble enough to realize when we are wrong.
There is a second, somewhat hilarious example of a Rabbi making a wrong call, and then not wanting to admit it, in regards to a law on this daf as well.
Rav Naḥman went ahead and performed an action in the house of the Exilarch in accordance with his own opinion. He constructed an opening in the form of a doorway such that the upper reed was not in contact with the lower reeds. Rav Sheshet said to his attendant, Rav Gadda: Go, remove those reeds and throw them away, so that they would comply with the opinion of the other rabbis. The attendant went, removed the reeds, and threw them away. Members of the Exilarch’s court found him (the attendant Sheshet had sent) and imprisoned him for destroying the form of a doorway that permitted them to carry. Rav Sheshet went and stood at the door of the prison, and called out to him: Gadda, go out and come to me. The Exilarch’s men released him, and he went out and came to Rav Sheshet.
Next, there is a conversation between Rav Sheshet and his fellow rabbis whee Sheshet learns that perhaps his conclusion was wrong, and he acted incorrectly when he removed the reeds at the house of the Exilarch. So, Rav Sheshet said to Rabba bar Shmuel, that if he discovers that he is wrong again: If you find them, do not say to the members of the Exilarch’s household anything with regard to this baraita of an arched gateway, as it is proof against my opinion.
Sheshet doesn’t want to end up in prison or to send anyone to prison.
So, that begs the question – does the rabbi explain why we don’t need to duck to her congregation? Or does she participate as well? People hate being told they’re wrong.