... in this Bloggingheads debate with Bob Wright. Bob is pushing a proposal he writes about here, and Sullum is really solid:
ADDED: Here's the section where Wright hypothesizes a school massacre every day... or every hour. Sullum calmly responds.
AND: I know a lot of my readers think Bloggingheads is too much of a slog, so here's a 17-second clip that says something shocking about rationality: