Meghan and Sam cover lots of ground in this long conversation, including the perils of confusing messaging around vaccines, the cowardice of institutional leadership in the face of social media mobs, and why the debate format can be, as Sam puts it, “a commercial for the limitations of conversation.” Most of all, they talk about what Meghan calls the question of “how not to ruin the dinner party,” which can happen when people who think too much about all of this stuff (like they do) engage in intellectual nitpicking and ruin everyone’s fun.