response: Interesting, so you wish to add another when both teams have 11 on the field already?
original_response: It might be that american football has caused brain damage and concussions and all that.
history: I love american football, it is so great! I see, so you like gridiron football, as it is called that as well. Yeah I mean it should just be called football though, its funny the rest of the world call football soccer It doe kind of make sense on being called gridiron since it has goalposts for both ends of the field. Yeah but in america we do what we want, its like living in Ancient Rome. We get to call our American sports what we want and every one has to accept it. So, do you have any changes or do you like how it is two teams playing on a rectangular field? I think the current setup is almost perfect, maybe add another player though.
knowledge: American football, referred to as football in the United States and Canada, and also known as gridiron football or simply gridiron, is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end.