And that is exactly why we consider this speaker one to be the inside and this speaker two to be the outside, right? Because initially on the inside, we have less sodium ions than on the outside. Here, we have more. And when we have our right potential, this is the amount of sodium ions on the inside, and this is the amount of sodium ions on the outside. Now notice what happens. Our sodium ions tend to move from the outside to the inside, and the same thing is dictated by this concentration system.