It is true that you cannot simply repeat maxims others have declared and expect that the job gets done well. Our profession (like many, many others, if not all!) requires judgement to do the best job. Different situations may call for different decisions.
> Our profession (like many, many others, if not all!) requires judgement to do the best job.
And is almost permanently open to retrospect + disagreement of "you shouldn't have done that this way and followed maxim A, you should've followed maxim B instead" and vice versa... :)