| That is probably one of the things that will be necessary to help with this problem, but this kind of feature is always only a part of the solution. And it's far more complex than just having a single flag. Obsolete can mean a lot of different things, and there are degrees of obsolete. And people still use older versions of technology, so in some cases you might want to look for older solutions anyway. So it would likely have to be more like a version flag. Now you need to get some people to curate that information and properly apply the version/obsolete tags. That's probably easy for some of the more often searched for posts, but very difficult for the long tail of answers. You need to educate the community on how this new feature works, and when to apply this flag. You need to decide on who can set the flag, whether you need multiple votes and how to handle disputes when people disagree or set it wrong. If you decided that a version flag is needed, and not just an obsolete flag, you need a UI and people that manage the available versions for each programming language/framework/library. You need to decide how to handle the same question in multiple versions. One question with multiple answers and each answer tagged with a version? A question per version? Do you actually want to enforce one variant, or allow both to exist? Questions can also be obsolete, and that is often in a more complicated way compared to answers. Should that be handled with this kind of flag as well? This is not a trivial change, but something along these lines is probably necessary. |
How do I solve problem X using version Y of Z.
In some cases people encounter older versions of technology questions and make a new answer saying updating for version X of the technology - I know this happens because I did it myself for a Gulp question and got a good number of upvotes - even though I could never actually get the accepted answer of course.