The Truthful Liar [SEP] director
The Truthful Liar
The Truthful Liar is a lost 1922 American mystery silent film directed by Thomas N. Heffron and written by Percy Heath and Will J. Payne. The film stars Wanda Hawley, Guy Edward Hearn, Charles A. Stevenson, Casson Ferguson, Lloyd Whitlock, George Siegmann, and E. Alyn Warren. The film was released on April 23, 1922, by Paramount Pictures.
Cast.
- Wanda Hawley as Tess Haggard
- Guy Edward Hearn as David Haggard
- Charles A. Stevenson as Harvey Mattison
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question which will always elicit a meaningful answer from Random. The change is as follows:
This effectively extracts the truth-teller and liar personalities from Random and forces him to be only one of them. By doing so the puzzle becomes completely trivial, that is, truthful answers can be easily obtained. However, it assumes that Random has decided to lie or tell the truth prior to determining the correct answer to the question – something not stated by the puzzle or the clarifying remark. 
One can elegantly obtain truthful