[With apologies for the audio issues at the beginning. They do diminish pretty quickly.] The Gemara asks why verses are needed when logic should be enough, in that the unintentional act is permitted. Rava and Abaye explain that the verses are necessary to make the point here to R. Yehuda and R. Shimon - as, when it comes to intent, they each take the less popular position. More on brit milah: You can do anything pertaining to the brit on Shabbat, including all ways of caring for the injury. Plus the factor of beautifying the mitzvah. And...the controversy of Metzitzah BaPeh - part of the post-brit milah care for the child. Including Anne's report back from a conversation with mohel Dr. Daniel Kaszovits.