Though failure is also part of experience in business , but we tend to sit down and learn better when we fail at a business than whenwe are succesful , we dont tend to look at our loopholes because of the success.Well I am amazed to here that failure is the best teacher I used hear of experience is the best teacher,I totally disagree that failure is the best teacher,one could keep failing without learning to do the right thing except he applies wisdom,so to me wisdom is the best teacher