It is because I read the book before seeing the film and I was disappointed because as close as the script hewed to the book once reaching the casino, the final encounter with le Chiffre was very different. Having watched the film 4 times now, 3 in the theater and once on the DVD, I realized why I had not warmed up to Daniel Craig as much as I think I should be considering he is the closest to Fleming's Bond since Timothy Dalton.