There are a few questions poking around the site where the answer has changed with time (regulations changes, new technology, things like that.)

I'm wondering what ought to be done when that is noticed? Especially in scenarios where people are leaving comments about how the answer has changed and the answer is not being updated...

(This questions is mostly hypothetical, fyi, there are maybe a couple of examples of this on the site, maybe. But I think it makes logical sense that this issue will crop up more as the site moves along, so I'm curious what the plan is before, you know, things get bad.)

• – Farhan Mod
Jul 16, 2015 at 16:49
• I figured there may be some discussion on Meta, I'll make sure to read that as well. Jul 16, 2015 at 16:52
• @Farhan In a supreme irony, the second question has an answer which is outdated (the "Too Localized" close reason has been gone for a while) Jul 16, 2015 at 16:52
• @voretaq7 Sounds like you should flag that answer as "Too Localized." Oh, wait... Jul 24, 2015 at 14:30

If it's something simple that can be easily fixed (e.g. Position And Hold -> Line Up And Wait) my inclination is to fix the original answer (particularly if it's an accepted answer). This is part of why we have the ability to edit questions and answers on the site.

For something more complicated where an entire new regulation has appeared (or an existing one been stricken) that invalidates the answer(s) on the existing question and would require a total rewrite to "fix" I'm leaning toward "Ask a new question, put the new (correct) answer there, and duplicate-close the old question with a note added to it saying "The regulations changed on date, please see new question for updated information." – It's not a perfect solution, but it's better than a full rewrite of someone's answer, and way better than providing wrong information, or forcing people to pick through the answers to figure out which one is the most current/correct answer.

• What about answers that include multiple pieces of information, and only one of them is outdated, but it's not necessarily a simple fix (so it doesn't really fit your first option there...)? Jul 16, 2015 at 17:12
• @JayCarr As long as the "fixes" can be made without radically altering the answer they're usually fair game. There's some good discussion on this in the metaverse: meta.stackexchange.com/questions/238333/… & meta.academia.stackexchange.com/questions/1573/… Jul 16, 2015 at 17:26

Update them.

Of course, you can/should leave the original answer as much as possible. However, we want to have the best answers available on the internet, and that means up-to-date info.