Right, makes total sense. I think, the big thing standing in the way of my thinking about this is that MV is one measurable number where pressure is a curve over the time with an infinite amount of numbers along the curve and different shaped curves based on all kinds of factors. And, a curve with a spike might wind up with the same MV at the end of the curve as a differently shaped curve with no spike. I had it in my simple head that pressure is one number like MV. Super interesting.