And we know from physics, whenever we have two light charges that are closer, that will increase that electric repulsive force between these two points in space. And so that's why this will be slightly higher in energy and more reactive than this molecule. So we ultimately want to make the molecule more reactive in step three. Now, let's move on to step four. Now, in step four, what we basically want to do is we want to increase the phosphoryl transfer potential of this molecule. And so we ultimately want to transform it into a molecule that will be able to better transfer a phosphoryl group onto an ADP molecule to form an ATP molecule and Pyruvate in step five.