Actually, my sister's full-time job is explaining to folks at the end of their cancer journey that there's actually one more thing they can try. It very likely will not help them survive. Not for themselves, but for people that come after. A drug that might not do anything, or it might do a little, or it might be what we've been praying for.

And those Iowa farmers and shopkeepers and schoolteachers at the end of their lives sign the form. An unreasonable population of them. For no reason but to help.