Detailed Instructions: Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title
Problem:In Dark City, everybody seems to have memories of Shell Beach planted by Strangers which doesn't even exist. It also gave the main character a reason for searching it. But why did the Strangers imprint the memory of Shell Beach when they were not even supposed to remember where it exists? Why did the Strangers make this memory loophole?
Solution:
Why did the Strangers make up Shell Beach in human's heads when they were not even supposed to go there?