Exactly right. The ability for anyone to change anything is OK, but proposed changes should have to be reviewed and okayed before they are put into effect. Of course, this means wiki would have to have a heck of a lot of trusted reviewers, many of whom would have to be specialists, but most could be generalists. Generalists can screen out the pranksters and refer specialist questions to the specialists. This would make the difference between a top-notch resource and a resource that one is never sure about, which is what wiki is now.

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Everyone is entitled to his own opinion, but not his own facts.