That's illogical though, the line isn't straight. If it is, the posts aren't vertical.
not to mention that they are comparing the portion of the line half-way between 6 and 18 yard boxes to the position of the ball. is the ball going out for a goal kick then?
Yep, that's a good point, drop a line down from the edge of the ball to where the line is and it's not over.