Ty Dolla Sign

If I was in office, I'd get together all the chiefs and all the heads and chiefs of staffs of all the countries and explain to them like, 'This is how it's going to be. We need y'all oil and water. Y'all need our money and technology. Now, what y'all gon' do?'

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.