So the outside and the inside are neutral with respect to the charge. So we're going to begin by assuming that. Now the question is let's take a look at the following concentration amount. So we have many more of these sodiums on the outside than on the inside. And that means if the sodium ions can somehow flow across the membrane, they would travel from the high concentration the outside to the low concentration the inside. And likewise, if these potassium ions could somehow travel across the membrane, they would travel from the high concentration the inside to the low concentration the outside.