How does the metaphor of the …

The world offers riches enjoys shelter and food heat and clothing exactly as the rattrap offers cheese and pork. the rats are trapped when they are tempted by these bits of cheese and pork in the same way as soon as anyone let himself be tempted by any of the baits offered by the world the world closes on him and then everything comes to an end . This has been illustrated in the story by the example of the red trap Seller as soon as he was tempted by the 30 Kronors of the crofter,his life became difficult. he had to leave the road for the fear of being arrested. when the ironmaster's daughter lifted his cap from his eyes he trembled out of fear as If he had stolen something or had run from the jail. so the metaphor of the rattrap is quite apt.