>Because most american people I know in football, know their EXACT role. Mr. Offensive lineman - I smash whoever is in front of me. If the play is to the left,

>Because most american people I know in football, know their EXACT role. Mr. Offensive lineman - I smash whoever is in front of me. If the play is to the left, I smash left. If the play is to the right, I smash right. They know nothing about defense. They know nothing about receiver routes. They don't care. They stand up and smash people. That's a very oversimplification of american football. For a basic example even the "dumb" offensive lineman has to play differently whether it's a run or a pass. A more complicated play like a screen will require a lot of coordination with his other teammates to perform correctly. American football is actually a pretty good analogy for a the typical development team and the different roles an offense has. You have people in the trenches, people doing flashy stuff and a field general trying to tie it all together.