K can either be greater than one and if K is greater than one, that means at equilibrium we have more products than reactants. And that means our reaction is a product favored, it's spontaneous going this way. Now, if K equals one, that means at equilibrium our concentration of products is the same as the concentration of reactants. Now, if K is less than one, that means this denominator is larger than our enumerator. And that means we have more concentration of reactants of these guys at equilibrium than of our products than these guys. And that means our reaction is not product favorite, it's not spontaneous, in fact it's reactant favorite.