<i>In a wiki you need to establish enough context that the page is useful to someone who comes to it with no other help</i><p>Bingo.<p>The idea that answers can just be written in a wiki ad hoc is one of those pleasant-sounding pithy conversation-stoppers, but it&#x27;s strictly notional. It&#x27;s certainly true for small, bounded, well-defined, trivial and&#x2F;or obvious stuff, but that&#x27;s not usually the stuff people pester the experts about (well, one would hope).