What is the reasoning behind the paradox?

1. What would happen if Pinocchio said: "My nose will grow longer soon."

2. Suppose you pass by a barber shop. The sign reads: "Do you shave yourself? If not, please allow the shop to shave your face! I only help those in the city who do not shave themselves. People shave, others don’t.” This simple introduction is enough for you to walk into this barber shop, but then you find the question – does the barber shave himself? If he shaves himself, then he violates his promise to shave only those who do not shave himself. If he does not shave himself, then he must shave himself because his promise says that he will only shave those who do not shave himself. . Both assumptions make this sentence unreasonable.

3. Crocodile Paradox. A crocodile caught a child and said to the child's mother: "Guess whether I will eat him? If you guess it is right, I will not eat him. If you guess it is wrong, I will eat it." The child's mother said: "I guess you You want to eat my child." The crocodile said: "Haha, then I will eat it." The child's mother said: "I guessed it, then you shouldn't eat him." The crocodile was confused now. If he returns it to her. Child, then he guessed wrong that I should eat it, but if I ate him, she guessed correctly that I should not eat him.