So we were able to basically derive this equation in that lecture and we're going to use this equation in just a moment to basically give the Michelin constant a second physiological meaning. This is the important assumption we want to make. Let's suppose that the dissociation of the enzyme substrate complex is much more rapid. So the dissociation of the enzyme substrate complex into the enzyme and the substrate. So the reaction going this way takes place much more quickly than the reaction going this way. So the dissociation going this way takes place much more readily than our dissociation into the enzyme and this product.