Jack Ma

When you get up into the crown of a redwood tree, you lose sight of the ground entirely. You also lose sight of the sky. And you're in a lost world. You're in an undiscovered, unexplored ecosystem, somewhere between Heaven and Earth, filled with forms of life, not all of which have been given names by scientists yet.

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.