User blog comment:The Ultimate Thinker/How to catch a Sock Puppet?/@comment-24806962-20140815174217/@comment-26479628-20140815174626

I edit on some wikis where sockpuppeting is a common issue. Usually, the sockpuppet will accidentally "spill the beans" and say something that makes you sure they are another user. But as you said, admins must be 100% certain, otherwise they could block an innocent user.