And what that means is if we have a membrane that consists of these fatty acids and one that consists of these fatty acids, the overall strength of the intermolecular interactions in this particular membrane will be greater than in this particular case. And so in such a case, the membrane will be more rigid and will have a higher melting temperature. So longer fatty acids can form more lung dispersion forces than shorter ones. Therefore, the presence of longer fatty acids decreases the fluidity, makes the membrane more rigid and increases the melting temperature because we have to input more energy to break those lung dispersion forces than in this particular case. Now, what about the double bonds? So let's compare.