For the record, my prior request to help fix the erroneous post on induction has been blocked by one user's actions. Thanks to those who tried to help. It will require help from more users.

D1 is now again up for delettion thanks to user64742. Needs one more vote. Problem is that the OP does not know about strong induction, but the answer claims not to use it, when it actually does - so it will likely greatly mislead the OP.

math.stackexchange.com/questions/3071765/… This should be closed as “opinion based”. It is opinion based. It isn’t even a math question.

@user64742 Could you please elaborate on why you believe that about your own question? It isn't obvious on quick glance.

@BillDubuque the question is asking how to solve an arg, and a childish one at that. You don’t any further from “not math” than that. I suspect it also violates the rule about no contest questions.

@BillDubuque to elaborate on why opinion based, just look at the images. They are far too pixelated to derive meaningful measurements about angles.

EYYYYY, look who's back. @amWhy

@AlexanderGruber :-) Hello back at you!!

D1, D2, D3.

D4, D5, D6.

D7, D8, D9.

D10, D11, D12.

Opinion-based, help-me-decide-which-text-to use post math.stackexchange.com/q/3239037/29335 Nearly impossible to provide a satisfactory answer, I think. There are several questions.

math.stackexchange.com/questions/519845/… I'm perplexed as to why this question was recently closed as a duplicate of a question that was asked a year and a half later which has received much less overall attention.

@GregoryJ.Puleo Excellent question. It was closed by Bill Dubuque. He's around here a lot and can hopefully address that here.

@GregoryJ.Puleo I don't understand your question. Do you think that the choice of dupiicate target should be made only based upon temporal factors, or how much attention it received? (many poor hot-list threads get orders of magnitude more (undeserved) attention than others).

@BillDubuque You have several means of contacting me. Please don't use comments in random questions/answers.

If you think that the questions are similar enough to be a duplicate and the answers are worth preserving, a merge is far more appropriate... in general (more on that later.) The procedure you have done is often used for questions of considerable quality themselves, or some value in another sense. (Historical, or for organization as you mention etc.) There is no such value on the newer question.

As I mentioned, if you think the answers do, a merge would be more appropriate... but actually in this case not so much due to the other answers being focused on the particular numerical values of the question. It would be best for you to just answer the other question manually.