"The Keepers could have some form of talk-control that isn't like the one they're showing you, working by a totally different method.  Like magic.  And what they're showing you is so that, if anybody else uses the real magic of dath ilan, people say 'oh that must be talk-control' and alert a Keeper."

"The Keepers could have some form of mind-control that isn't like the one they're showing you, working by a totally different method.  Like magic.  And what they're showing you is so that, if anybody else uses the real magic of dath ilan, people say 'oh that must be talk-control' and alert a Keeper."

"The Keepers could have some form of mind-control that isn't like the one they're showing you, working by a totally different method.  Like magic.  And what they're showing you is so that, if anybody else discovers the real magic of dath ilan, people say 'oh that must be talk-control' and alert a Keeper."