And so some of these sodiums will be brought to the inside, and so this will become more positive. And that's exactly why the actual value for the voltage difference of the rustic membrane is around negative 70 millivolts. Because the membrane is not only permeable to our potassium, it's also slightly permeable to our sodium. So we see that these potassiums are brought to the outside, and that makes the inside negative. At the same time, these sodiums are brought to the inside at a much smaller rate, so this becomes slightly more positive. And so what the actual voltage difference between the inside and outside?