That is a big, big difference. So these lipid bilayers can be very expensive. And that's exactly why our cells are made up of these or our cells containing these lipid bilayers, because cells can be very, very large in size and this would not be able to form that same cell membrane structure. And three, these bilayer membranes have the propensity to fix themselves. Why? Well, let's suppose some type of hole is formed in that bimolecular sheet, in the lipid bilayer.