Positional distinctions are disappearing. Rushing yards are losing meaning. And offensive and defensive schemes are shifting from game to game — if not drive to drive. The most popular sport in America is changing faster than it ever has before — yet the way we talk about the game has largely stayed the same. It’s time for the conversation to catch up to the shifting concepts redefining front offices and gameplay nationwide. So welcome to The Ringer’s You Don’t Know Football Week, where we’ll explore and attempt to better understand the evolutions already occurring on the gridiron — and the reboots we’d like to see make their way to the game next.