So far, we haven’t closed many questions as duplicates (more precisely, we don’t have many questions closed as duplicates which haven’t been deleted), and we haven’t decided how we want to handle questions in detail.
Specifically, how should we define duplicate questions?
- Questions which are exact duplicates of another question.
- Questions which are answered (fully) by answers to another question.
or perhaps something else?
Stack Exchange in general seems to use the latter definition; this has resulted in the text used in “duplicate” boxes:
This question already has answers here
followed by (a) link(s) to the target question(s).
This came up with What did the 8086 (and 8088) do upon encountering an illegal instruction?, which seemed to me to be answered by my answer and supercat’s to another question, Use of undocumented opcodes — and the top-voted answer to the first question refers to the latter question.
After further reflection I no longer think the two questions are duplicates of each other, or even that the answers to either are complete answers to the other. However the question remains, and I think it would be better to decide it now rather than later (obviously nothing is set in stone and as the community evolves its practices will too).