From the Author
How the book came to be written.
I started out researching a completely different book about the possibility of a prehistoric civilisation and an earlier evolutionary development of humanity than the orthodox consensus allows.
The research went far too well. I kept coming on material that was just plain impossible. The first few times I dismissed it as freaks, but after a while I had to take it seriously. I worried for months about what it meant, then eventually it struck me that the only answer was time travel by somebody from our own future.
I postponed the planned book (although I've just finished the manuscript now) and wrote Time Travel instead.