I think &quot;here is some math&quot; is a good way, but you need to be really delicate about it and take it slowly. What you&#x27;re fighting is an emotional reaction that&#x27;s hard-wired into our brains. The problem stems from them having an invalid view of the world, i.e. perceiving terror attacks as vastly more probable than they really are. Therefore you need to fix their worldview - or rather, help them fix it themselves. Showing the attacks in perspective is one way to do that, and the one that - over time - helped me stop worrying, even though after 9&#x2F;11 I was scared the world is ending and that I&#x27;ll die in a mall attack tomorrow. It takes time, and you can&#x27;t push it too hard - if you become their conversational enemy, you&#x27;ve not just lost, you&#x27;ll strenghten their fears.