And that's because glucaneogenesis, if it simply reversed these steps. So for instance, if we look at step ten, if gluconeogenesis went from Pyruvate to Pet, by using this specific reaction pathway, it would need to use 16.7 kilojoules per mole of energy. And to prevent this from happening, to make this reaction, this step, an exergonic step, it uses a completely different pathway to transform Pyruvate into that phospholenyl Pyruvate molecule. So once again in glycolysis, the three irreversible steps release the majority of the free energy in glycolysis. And that means that for gluconeogenesis to be an effective process, to be a spontaneous process, it must actually somehow bypass these three extremely exergonic steps. And that's exactly what happens.