More on the Korban Pesach and the korban chagigah that is offered with it - Ben Teima's opinion whether the chagigah has to be roasted becomes essential [What's What: Yehuda ben Teima]. The 5th question of the 4 Questions is also telling. Also: What if everyone were impure - how would they bring the Korban Pesach? And also, however would there ever be a case of everyone being impure?! Plus: The story of Ben Dortai, who traveled far enough away so as not to be obligated to bring the Korban Pesach, because he disagreed with the psak about the chagigah.