You are on a journey.
You get to a wall with two doors.
There is a guard standing at each door.
One guard says one door leads to the path you need and the other guard says that the other door leads to certain death and you can only ask them one question.
Before you speak, the first guard says one of them always tells the truth and the second guard says one of them always lies.
What do you do?
Well if you’ve seen the 1986 musical adventure “The Labyrinth,” you might think you know the answer.
In that movie, Sarah asks the first guard, “Would he (Guard #2) tell me that this door (Door #1) leads to the castle?” Guard #1 says yes and Sarah picks Guard #2’s door and doesn’t die.
Now as confusing as that is, consider this: If one of the guards always lies then both of the guard’s statements are wrong. Because in the very setup, the liar guard, whichever he may be, would have to tell a truth.
Did you notice this?
There are many sources that intentionally and unintentionally attempt to deceive those that consume their content.