Could someone much smarter than me do some napkin math and figure out roughly what kind of tradeoff in security you make by limiting the noise?<p>20-40 seconds is fine if you are releasing NSA secret files and want the chance of metadata discovery to be &lt;0.1% (number made up)<p>But it&#x27;s too much to use as a regular form of conversation between average parties who just want to set a precedent that all conversations by default should be un-monitorable.<p>However what if that number was down to ~5 seconds? Now it&#x27;s tolerable. But the tradeoff is, what does the chance of detectability go up to? 1%? 5%? 50%?