Why not introduce aging into the answers? I think SO has a bigger problem, how to invalidate answers that are for obsolete versions of software? Maybe if the an

Why not introduce aging into the answers? I think SO has a bigger problem, how to invalidate answers that are for obsolete versions of software? Maybe if the answers would slowly age (say lose one point per month), then the old guard wouldn't be so protective of them, and the problem would solve itself.