It often happens that a quite ill-posed question uses tags that are relevant to the question, but that the answer(s) lead(s) to the question core, which is often a different field of Biology.
- Take Is addiction adaptive? as a quite random example case. The question is not neuroscience at all, likely because OP is not into that field. OP starts talking about feather pecking, which is, to my opinion, irrelevant to the question proper. Instead, I basically tried to tease out the question core and answer the relevant part, namely 'what is addiction'. This, however, is all about neuroscience. That tag was not included, likely because OP was expecting a more behavioral and evolutionary answer.
This is an example; it happens quite often that users dissect the question, take away incorrect assumptions, strip off the fluff and expose the question core. Then, my question is:
Should (preferably more experienced) users then decide to edit the tags?
Personally, I am hesitant to change the question proper, because there is a potential chance that OP did mean something different with the question. Additional tags, on the other hand, may draw in potential other answers without shifting question focus per se.