That's all true, but scarcity is a fact of life. Often, the scarce commodity is time for evaluating a complex decision. Part of responsibility is accepting the fact that your foresight and insight are limited and that you may have to face the results of a bad decision; most ethical codes require that you submit to the judgment of your professional peers in that event, but also direct the person to just dealing with the problem at hand, eg a patient's immediate medical condition rather than an overall life situation.