One of these people asked, "How would this city behave if attacked by a horde of monsters?"
Having already noted the value of the Metal City, he needed more realistic information about its safety.
It was obvious that there would be resistance to the infiltration of monsters there. However, the results could be very different if 100, 1,000, or 10,000 monsters attacked the area.
Vicente answered this pertinent question. "The way the city is now, it would only be able to stop a few hundred 3rd stage monsters. But we currently have 4% of the land we want to build on.
When the city has a few tens of thousands of inhabitants in the near future, these defenses will be able to withstand tens of thousands of 3rd stage monsters attacking it."
This was no small feat. It would give the locals a lot of security, a place to sleep soundly, and confidence that their defenses would hardly fall. They would not have to worry about being killed while they rested!