For one thing, learning only from experience ​ — trial and error — ​ can be both costly and painful. It is also unnecessary. “ O if only you would actually pay attention to my commandments! ”
احد الاسباب هو ان التعلم عن طريق التجربة والخطإ قد يكون مؤلما ويكلِّف غاليا .‏