Why would it create a panic and destroy a government&#x27;s credibility?<p>Obviously you don&#x27;t make that announcement unless you have proof, but I&#x27;ve heard the &quot;cause a panic&quot; argument thousands of times, but never understood it.  Why would it actually cause a panic, and what would this panic take the form of?<p>Let me put it another way: we can imagine all kinds of horrible scenarios, but what evidence do we actually have that society would crumble upon learning of beings from other planets?