 about just learning about the steps that you take, you know, whether you've got a zone blocking scheme or you've got a read block of some sort, a gap over near linebacker or something. If you take a six-inch step when you're supposed to take a one-foot step or you take a down block when you're supposed to have a reach block or something to that extent, those little things add up, right? And all of a sudden, if you're six inches out of –