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Our daf cites a baraita that tells how B'nei Beteira had forgotten the rule that the Pesah sacrifice is brought even on Shabbat.
The B'nei Beteira appear to have been the ancestors of a well-known rabbinic family, including, for example, the sage Rabbi Yehuda ben Beteira, who lived several generations after the destruction of the Temple. It appears that this family held a position of national religious and spiritual authority, even though they did not have an official position as did the family of the Nasi. We find that they are consulted on matters of national importance not only during Hillel’s time, but after the destruction of the Temple during Rabbi Yoḥanan ben Zakkai’s time, as well. The dramatic appointment of Hillel and the relationship between arrogance and dementia.