I have sought out bright people and said, “Where are the pitfalls?” A point I want to make very strongly is that I don’t want the old books on the interpretation of Poland. I want the five best books of the last ten years. I want to know where we have more or less expanded our knowledge.  The second thing is, as a result of that research, I really do pledge myself not to fake anything. Not to give spurious quotes on important subjects. Not to portray a person wildly contrary to what the facts are, regardless of where the facts lead.  The third is that I have tried to, in this wonderfully exciting form, always to pin the story on fictional characters or fictional boats or fictional regiments or fictional companies. In history, I would never write about the Mayflower because everybody has done that. And everybody knows too much about that. I would write about the third ship that came in. Nobody knows what it was. I’m going to say it’s the Thetis. And boy, are there going to be some interesting people on the Thetis. And they are going to get to the Plymouth colony. They are going to tear that place apart because nobody knows really who they were. That’s a device I use, and the adjunct to that is, basing my story upon those imaginary characters, I then am not adverse to bringing in historic characters to give it authenticity and color, but only insofar as the historic character might really have impinged on these lives.