TED-Ed: Can you solve the troll’s paradox riddle? - Dan Finkel

In this video, you and your brother explore the realm of Paradoxica, encountering a troll that captures creatures. The troll challenges you with a paradoxical logic puzzle: say something true to free the creatures or something false to free your brother. Using coercive logic, you craft a statement that forces the troll to release both your brother and the creatures. This solution, inspired by Raymond Smullyan, demonstrates the power of logical reasoning. The creatures celebrate their freedom and promise to lead you to treasure.

What did the troll offer in exchange for a true or false statement?

How does the protagonist plan to save their brother and the creatures?

Who is Raymond Smullyan and what is his contribution to the logic presented in the text?

What is the significance of the statement 'you will free my brother' in the context of the troll's rules?

What was the reaction of the paradoxes after the protagonist outsmarted the troll?