So let's see what entropy tells us about such a system. Well, entropy dictates that a system will only strive to even out. And that means in this system, the site molecules will want to move inside the cell. But remember, because this is semipermeable membrane side molecules will not be able to go inside. And that means instead, water will try to even out the system and water will flow from a lower concentration to a higher salary of concentration. So we can define as much as I pressure in a second way.