# When are two answers too similar?

Is it true that $0.999999999\ldots = 1$? math fallacy problem: $-1= (-1)^3 = (-1)^{6/2} = \sqrt{(-1)^6}= 1$? Why $\sqrt{-1 \times -1} \neq \sqrt{-1}^2$? have many similar answers. When is this sanctioned?

Because I like figures, I wrote https://math.stackexchange.com/a/676192/85079 by dint of another answer. I referred to it. I think this similar but not identical answer can aid other people. But a moderator deleted it. The changes can aid other people, ergo can we have both? Thanks to all.

It is fine and unavoidable that wo people give structurally similar answers by accident. But that doesn't mean that copy-pasting someone elses answer and changing a few sysmbols is acceptable behavior.

It's fine (and perhaps unavoidable) that $2$ users submit structurally similar answers by happenstance. But this does not imply that copy-pasting someone else's answer and changing a few symbols should be tolerated.

• cdn.avsforum.com/0/04/04be3904_18462291.jpeg
– Asaf Karagila Mod
Commented Mar 7, 2014 at 22:05
• @Asaf: Demystify wherefore this vatic effigy emanates feyly. Commented Mar 8, 2014 at 7:49
• Are you going to start using colors now, too? :-)
– Asaf Karagila Mod
Commented Mar 8, 2014 at 8:01
• @Asaf: $\textbf{colo}\color{red}{\textbf{u}}\textbf{rs}$. Commented Mar 8, 2014 at 8:04
• I know that Canadian are educated folks who understand the metric system. But I didn't know that they go to the theatre and like to sit at the centre while their favourite movie plays.
– Asaf Karagila Mod
Commented Mar 8, 2014 at 8:08
• The irony on this post is too high. :p No offence. This is just amusing.
– Guy
Commented Mar 10, 2014 at 19:27