Well, for the same exact reason that we mentioned here. Essentially these two molecules in Glycolysis are at equilibrium, and that means their free energy value is very, very close to zero. And so they're at equilibrium and we can basically use the same exact type of enzyme, phosphor, glucose isomerase, to transform the fructose six phosphate into the glucose six phosphate. So once fructose six phosphate is formed, it'll negotiate step nine, which is the reverse of step two that we saw in glycolysis. Now, once we form glucosex phosphate, what happens next basically depends on the type of cell that we're in. In the majority of the cells of our body, for instance, muscle cells, the glucose six phosphate basically stops here.