Not-an-answer flag disputed by the author himself

See this answer (currently deleted, so 10K only). I flagged it as not an answer, and was disputed by the author himself!

I wonder if its wise to let the author himself be the judge to a flagged answer. Will such decisions be revised by someone who has rights to do it or is it final?

EDIT: I know the author of that answer himself may read this, please don't take it as an offence. I am just clarifying a doubt, pointing out a possible flaw in the software.

• I started out liking contest problems because, at least, they were not homework. Over time, i have come to realize that they are poorly documented, there is no reasonable relationship to be expected between the training of the person asking and the content of the question, finally a single number incorrectly typed may take a reasonable problem into a problem that simply cannot be solved: see mathoverflow.net/questions/16341/… May 22 '15 at 18:01
• @WillJagy, we had one such earlier today, where many of us spend nearly am hour on it just to see that OP missed a $\sqrt x$ which reduced the problem to a few seconds business! May 22 '15 at 18:04
• Jesse, yes, that is about the size of it. As to your theme of the OP disputing things, I generally feel that too much weight is given to what the OP wants, as well as the judgment of the OP on what makes a useful/correct answer. If they know so much, why do they need to ask the question of us? I often answer the question that ought to have been asked; I admit, this is rarely popular. May 22 '15 at 18:08
• @WillJagy, it was actually a misunderstanding in my case, please see the comments to the answer ArthurFischer gave! Also, in my case, it was not the OP, someone else answered and refused to delete. May 23 '15 at 12:18
• By the way, that answer should not have been flagged as "not an answer", since it is clearly an attempt to answer the question. It fails in that attempt because the answerer misunderstood the question, but that's what downvotes are for, not flags. Not-an-answer flags are for when someone uses the answer box for something that they don't intend to be an answer to the question May 23 '15 at 16:56
• @HenningMakholm point noted! I didn't know that! Thanks! May 23 '15 at 17:06