Russell Freedman

I visited the archeological site at the northern tip of Newfoundland. There is no question about it. It has been definitely determined that the Vikings were there for about 10 years - specifically, Leif Erikson and his extended family.

I didn't learn Chinese to write 'Confucius.' That would've been a monumental task. I have three friends who can translate Chinese text for me; all three helped me with my research on Confucius. They are acknowledged in my acknowledgements in the book.

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.