I have never read the book, the film is based on and I can barely imagine it could be more realistic than this movie. The movie is based on Miracles like a Disney movie, with fire inside the aircraft, a well-sized dog without food for days, minus degrees weather but they tolerate that like 10 degrees. Sometimes facial expressions show zero fear in their lives. I watch Kate Winslet movies but this one is nothing. I just wasted 2 hrs of my life.