The Whisperer, the tool Mr. Curtain uses to deceive the world and halt critical thought, is a machine that seeks truth. It has a neutral voice, which mirrors the way that truth is neither positive nor negative. It sees past Reynie’s attempt to lie to his subconscious. Though the Whisperer seeks truth in the minds of its users, it produces falsehoods. The Whisperer detects that Reynie fears being alone, so it reassures him that he is not alone, generating a false sensation of pleasure. The Whisperer is strong enough to undermine Reynie’s commitment to Mr. Benedict and his mission, even though Reynie knows the Whisperer to be a tool in an evil scheme.