in reply to Updating and Linking Old Nodes

Often when searching pm for a solution I'll discover old nodes with old solutions

Often, I enjoy finding old threads about current problems. I've had the experience of the old thread shedding light on why something or some solution evolved the way it did. Also, older data has provided workarounds for 'modern' and broken modules or applications.

Should a good monk help his fellows by responding to the old discussion with updated information or a link to the newer discussion?

Generally I think "Yes" is the right answer here. Occasionally you'll see that happen Q&A or other areas. In practice it'll never happen methodically, since it's not somehow encouraged by discussion board designs (Everything included.) It's a "here and now" moving window of Today's Questions mostly.

It would be wonderful to find a workable paradigm for open source version control on "Know How".

Updating 'old' threads might be a stab at that, including change, date and author history.