Try this thought exercise.
• Imagine there is a disaster occurring in a city 5 miles away, in your state, with the risk of the disaster spreading.
• Now imagine the disaster is occurring in a city 5 miles away, but in a different state.

Which disaster is more dangerous?

A study finds that people are more concerned about a disaster approaching from within a state and less concerned about a disaster spreading from a different state - even if the disasters are the same distance away. People think of a border as a physical barrier that can keep disasters at bay.

Researchers also found that maps with thick borders help people feel safe, They feel even more protected when the border lines are made darker.

This is good to know. We don't need Trump's wall to help us feel safe. What we need is a map with a really thick and dark border line drawn between the US and Mexico. Problem solved.