Rejecting R. Yehudah's conclusion based on his own rationale, in the sharpest of terms. Also: Crumbling chametz and throwing it into the wind or the sea - does the crumbling apply to that which would thrown into the sea, or only into the wind, and throwing into the sea could be whole? A real grammatical conundrum. The parallel is grinding idols and scattering to the wind... or the sea, which just might be the Dead Sea. What is retrievable, and what is destroyed? Also: When Halakhah is affected by history - specifically, the original Pesach and how it was practiced. And what made the day of the 14th special? And how do we ensure Pesach in a post-Temple era, when there's no Korban Pesach, and the focus is on matzah and no chametz.