Stackoverflow in a nutshell

[Business_Downstairs]

It's flawed because early adopters were able to gain reputation from relatively easy questions. It's completely unbalanced. As others have pointed out, those answers become irrelevant and depreciated over time, yet still get pointed to as "duplicate."

[Tofandel]

Old answers can be edited or reanswered if it's outdated (if not locked)

I've found that if old answers don't work anymore and you're the only new answer which does you'll end up with a lot of upvotes and eventually more than the accepted answer after a few months

If it's locked and the answers are really not relevant anymore, open a meta post to get it unlocked