I can imagine a real blizzard on Sunday in which the players can hardly see each other, much less play football, a game in which the snow is up to their knees, and any kind of movement is extremely difficult. Such conditions raise questions in my mind: Has the NFL ever canceled a game because of weather conditions? (I know college games have been delayed because of the threat of lightning--but NFL games?). Could the Patriots legally plow the field? Or is it covered by tarps that a regiment of weightlifters be able to pull of so the game could proceed? Could the field be legally melted, somehow--electrically or chemically? What happens if the players simply CAN'T play?