What if 2 answers are essentially the same?
11336
How should we deal with duplicate answers?
83172
Acceptable solution for 'answer copying'?
32895
How can I avoid asking duplicate questions?
71476
How to deal with duplicate answers posted long after first answer(s)
9251
Do you delete your own answer when it's a duplicate?
109904
Test if two things typeset identical results
3685
Confirming that my own question is a duplicate by voting to close should have immediate effect
42404
When answering, could we be informed that "the following people are already answering this question"?
148502
Two accepted answers
112256
Should I still post an answer if I see several answers have already been posted while writing an answer or making a fiddle?
64859
Is it acceptable to add a duplicate answer to several questions?
112391
How should one respond to "duplicate answer" flags?
31470
Why was this question closed as a duplicate and not as unclear what you're asking?
90255
Title and question body are the same
16653
How to deal with obsolete answers?
138119
Duplicate question close reason says "already has an answer," which is often false
127498
What to do about Copy Cat answers?