Well, what it tells us is we have this initial fast birth stage and that describes the first step of the reaction. And the first step of reaction, the actual binding of the substrate onto that catalytic seren of the active side is a very quick step. But as soon as that step takes place, we have a second step. And the second step is a slow step. And so what happens is we have the initial very quick step taking place and then eventually, when the steady state conditions are reached when the intermediate concentration doesn't change too much we see that the slow begins to decrease. And so we have this relatively slow process taking place.