Diana Nyad

When I walk up on that shore in Florida, I want millions of those AARP sisters and brothers to look at me and say, 'I'm going to go write that novel I thought it was too late to do. I'm going to go work in Africa on that farm that those people need help at. I'm going to adopt a child. It's not too late, I can still live my dreams.'

The most venomous animal that lives in the ocean is the box jellyfish. And every one of those barbs is sending that venom into this central nervous system. So first I feel like boiling hot oil I've been dipped in. And I'm yelling out, 'Fire! Fire! Fire! Fire! Help me! Somebody help me!' And the next thing is paralysis.

In 1967, the world health community launched a global effort to eradicate smallpox. It took a coordinated, worldwide effort, required the commitment of every government, and cost $130 million dollars. By 1977, smallpox had disappeared.

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.