But even if the competency of the courts to properly determine such questions were admitted, there would still exist one serious objection to their jurisdiction. Courts necessarily move slowly, while all differences arising between the public and the railways, and especially those concerning rates of transportation, require prompt and decisive action. There are no fixed conditions in commerce. It is a kaleidoscope constantly presenting new phases. Competition at home and abroad, tariff duties, the condition of the crops and a thousand other influences affect it and may require a prompt readjustment of the tariff. So long as railroad companies are permitted to resort to injunctions and effect other delays rendered possible through the machinery of the courts, to prevent for years the enforcement of tariffs prescribed by administrative authorities, so long will the public be at their mercy. So long as they have nothing to lose and everything to gain by a judicial contest, it will be their policy to delay through the courts the enforcement of any tariff, whether prescribed by legislature or by an authorized commission, that falls below their standard. It is not to be understood that the acts of railroad commissioners should never be subject to a judicial view. If such boards clearly exceed their authority or are otherwise guilty of maladministration, if they violate constitutional rights, then railroad companies, if injured by their acts, should be permitted to seek redress in the courts; but they should not be permitted to nullify an official tariff by legal maneuvers. It is clearly not within the province of the courts to make rates or to lay down rules to be followed by those to whom the law has delegated the power to make them, nor should the courts aid the railroads in any attempt to nullify an official tariff that has been legally promulgated. A tariff prepared by sworn and disinterested officials is more likely to be just than one prepared by interested railroad men, and railroad companies should be compelled to adopt it and continue it in use until it is amended or revoked by legal authority.