What is the protocol for revisiting general policy decisions on meta? Specifically, I'm not talking about debating whether or not a particular situation warrants an exception to a rule. Rather, I'm asking about situations where the rule itself needs to be revised or replaced in terms of being a canonical answer.
- This question recently came up on meta, citing a much older meta question with what appears an out of date accepted answer.
- I proposed these guidelines regarding homework questions which were marked as an accepted answer. Later, after attempting to apply them, I feel that they omit important criteria. Making any significant changes to it after the fact doesn't seem like a good idea as votes may no longer reflect the extent to which others agreed (or not) with it.
In general, how does the Stack Exchange model handle this type of situation? As a potential solution, could community wiki answers be useful here? They would allow the community at large to update answers to policy question to reflect evolving norms.