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Re:What does Stack Overflow want to be when it grows up? by PeterisP on Monday October 22, 2018 @02:52PM (#18277229)
This is a major issue. Just last week I had a student make an untrue claim about how something works based on a top ranking Stackoverflow answer. It turns out that the answer is from 2008, and was true back then, but has not been for something like 5 years already.

Stackoverflow badly needs a system for people (moderators?) to be able to 'obsolete' answers, possibly mark them with a highly visible "valid only up to version x.y of 2010" tag or something.

Re:What does Stack Overflow want to be when it grows up? by codinghorror on Monday October 22, 2018 @05:28PM (#18278695)
Try pressing the "improve this answer" aka edit button and editing it, for starters. Works even for anonymous accounts!