I'm curious on what the site policy is, and I'd like to limit this discussion to
whether all textbook/reference recommendation questions, or a subset of them, are too broad/open-ended for the site
(it's possible that some were closed and deleted as duplicates, although I will probably post another question on meta about deletion policy).
To start the discussion, here are two questions that motivated this meta post:
- Introductory biology text for an outsider [open]
- https://biology.stackexchange.com/questions/35335/reference-request-regarding-biomathematics-theoretical-biology [now closed]
In particular, I'm curious why  is open and  is closed, as  is arguably more general than .